fix: removing env switcher from bottom bar permanently (#30200)

## Description
Removes env switcher from view mode

#### PR fixes following issue(s)
Fixes #30199

#### Type of change
> Please delete options that are not relevant.
- Bug fix (non-breaking change which fixes an issue)

## Testing
>
#### How Has This Been Tested?
> Please describe the tests that you ran to verify your changes. Also
list any relevant details for your test configuration.
> Delete anything that is not relevant
- [x] Manual
- [ ] JUnit
- [ ] Jest
- [ ] Cypress
>
>
#### Test Plan
> Add Testsmith test cases links that relate to this PR
>
>
#### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)
>
>
>
## Checklist:
#### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag


#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Updated the Bottom Bar to conditionally display components based on
the view mode.

- **Refactor**
	- Streamlined the App Viewer interface for enhanced user experience. 

- **Chores**
	- Removed unnecessary feature flags and imports for a cleaner codebase.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/src/components/BottomBar/index.tsx

@@ -23,12 +23,14 @@ export default function BottomBar({ viewMode }: { viewMode: boolean }) {
   return (
     <Container>
       <Wrapper>
-        <SwitchEnvironment
-          editorId={appId}
-          onChangeEnv={onChangeEnv}
-          startSwitchEnvMessage={START_SWITCH_ENVIRONMENT}
-          viewMode={viewMode}
-        />
+        {!viewMode && (
+          <SwitchEnvironment
+            editorId={appId}
+            onChangeEnv={onChangeEnv}
+            startSwitchEnvMessage={START_SWITCH_ENVIRONMENT}
+            viewMode={viewMode}
+          />
+        )}
         {!viewMode && <QuickGitActions />}
       </Wrapper>
       {!viewMode && (

app/client/src/pages/AppViewer/index.tsx

@@ -44,19 +44,12 @@ import {
 } from "@appsmith/selectors/applicationSelectors";
 import { editorInitializer } from "../../utils/editor/EditorUtils";
 import { widgetInitialisationSuccess } from "../../actions/widgetActions";
-import {
-  areEnvironmentsFetched,
-  getEnvironmentsWithPermission,
-} from "@appsmith/selectors/environmentSelectors";
 import type { FontFamily } from "@design-system/theming";
 import {
   ThemeProvider as WDSThemeProvider,
   useTheme,
 } from "@design-system/theming";
 import { useFeatureFlag } from "utils/hooks/useFeatureFlag";
-import { RAMP_NAME } from "utils/ProductRamps/RampsControlList";
-import { showProductRamps } from "@appsmith/selectors/rampSelectors";
-import { FEATURE_FLAG } from "@appsmith/entities/FeatureFlag";
 import { KBViewerFloatingButton } from "@appsmith/pages/AppViewer/KnowledgeBase/KBViewerFloatingButton";
 import urlBuilder from "@appsmith/entities/URLRedirect/URLAssembly";
 import { getHideWatermark } from "@appsmith/selectors/tenantSelectors";
@@ -65,17 +58,12 @@ const AppViewerBody = styled.section<{
   hasPages: boolean;
   headerHeight: number;
   showGuidedTourMessage: boolean;
-  showBottomBar: boolean;
 }>`
   display: flex;
   flex-direction: row;
   align-items: stretch;
   justify-content: flex-start;
-  height: calc(
-    100vh -
-      ${(props) => (props.showBottomBar ? props.theme.bottomBarHeight : "0px")} -
-      ${({ headerHeight }) => headerHeight}px
-  );
+  height: calc(100vh - ${({ headerHeight }) => headerHeight}px);
   --view-mode-header-height: ${({ headerHeight }) => headerHeight}px;
 `;
 
@@ -132,26 +120,6 @@ function AppViewer(props: Props) {
   const { theme } = useTheme(isWDSEnabled ? wdsThemeProps : themeProps);
   const focusRef = useWidgetFocus();
 
-  const showRampSelector = showProductRamps(RAMP_NAME.MULTIPLE_ENV, true);
-  const canShowRamp = useSelector(showRampSelector);
-
-  const workspaceId = currentApplicationDetails?.workspaceId || "";
-  const isMultipleEnvEnabled = useFeatureFlag(
-    FEATURE_FLAG.release_datasource_environments_enabled,
-  );
-  const environmentList = useSelector(getEnvironmentsWithPermission);
-  // If there is only one environment and it is default, don't show the bottom bar
-  const isOnlyDefaultShown =
-    environmentList.length === 1 && environmentList[0]?.isDefault;
-  const showBottomBar = useSelector((state: AppState) => {
-    return (
-      areEnvironmentsFetched(state, workspaceId) &&
-      (isMultipleEnvEnabled || canShowRamp) &&
-      environmentList.length > 0 &&
-      !isOnlyDefaultShown
-    );
-  });
-
   /**
    * initializes the widgets factory and registers all widgets
    */
@@ -251,17 +219,11 @@ function AppViewer(props: Props) {
             hasPages={pages.length > 1}
             headerHeight={headerHeight}
             ref={focusRef}
-            showBottomBar={!!showBottomBar}
             showGuidedTourMessage={showGuidedTourMessage}
           >
             {isInitialized && <AppViewerPageContainer />}
           </AppViewerBody>
-          {showBottomBar && <BottomBar viewMode />}
-          <div
-            className={`fixed hidden right-8 z-3 md:flex ${
-              showBottomBar ? "bottom-12" : "bottom-4"
-            }`}
-          >
+          <div className={"fixed hidden right-8 z-3 md:flex bottom-4"}>
             {!hideWatermark && (
               <a
                 className="hover:no-underline"