chore: Remove Snaps insight dead code (#30130)

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## **Description**

Removes dead Snaps code following the removal of the old confirmation
screens.

[![Open in GitHub
Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/MetaMask/metamask-extension/pull/30130?quickstart=1)

## **Manual testing steps**

N/A

ui/components/app/app-components.scss

@@ -75,4 +75,3 @@
 @import 'name/index';
 @import 'name/name-details/index';
 @import 'confirm/info/row/index';
-@import 'snaps/snap-insight/index';

ui/components/app/snaps/snap-home-page/snap-home-renderer.js

@@ -91,7 +91,6 @@ export const SnapHomeRenderer = ({ snapId }) => {
       snapId={snapId}
       interfaceId={interfaceId}
       isLoading={loading}
-      useDelineator={false}
       useFooter
     />
   );

ui/components/app/snaps/snap-settings-page/snap-settings-renderer.tsx

@@ -72,7 +72,6 @@ export const SnapSettingsRenderer: FunctionComponent<
           snapId={snapId}
           interfaceId={interfaceId}
           isLoading={loading}
-          useDelineator={false}
           contentBackgroundColor={BackgroundColor.backgroundDefault}
         />
       )}

ui/components/app/snaps/snap-ui-renderer/snap-ui-renderer.js

@@ -5,10 +5,8 @@ import { Container } from '@metamask/snaps-sdk/jsx';
 
 import { isEqual } from 'lodash';
 import MetaMaskTemplateRenderer from '../../metamask-template-renderer/metamask-template-renderer';
-import { SnapDelineator } from '../snap-delineator';
-import { getSnapMetadata, getMemoizedInterface } from '../../../../selectors';
+import { getMemoizedInterface } from '../../../../selectors';
 import { Box } from '../../../component-library';
-import { DelineatorType } from '../../../../helpers/constants/snaps';
 
 import { SnapInterfaceContextProvider } from '../../../../contexts/snaps';
 import PulseLoader from '../../../ui/pulse-loader';
@@ -25,29 +23,19 @@ import { mapToExtensionCompatibleColor, mapToTemplate } from './utils';
 // Component that maps Snaps UI JSON format to MetaMask Template Renderer format
 const SnapUIRendererComponent = ({
   snapId,
-  delineatorType = DelineatorType.Content,
-  isCollapsable = false,
-  isCollapsed = false,
   isLoading = false,
   // This is a workaround while we have the prompt dialog type since we can't inject the SnapUIRenderer in the template renderer.
   isPrompt = false,
   inputValue,
   onInputChange,
   placeholder,
-  onClick,
-  boxProps,
   interfaceId,
-  useDelineator = true,
   useFooter = false,
   onCancel,
   contentBackgroundColor,
 }) => {
   const t = useI18nContext();
 
-  const { name: snapName } = useSelector((state) =>
-    getSnapMetadata(state, snapId),
-  );
-
   const interfaceState = useSelector(
     (state) => getMemoizedInterface(state, interfaceId),
     // We only want to update the state if the content has changed.
@@ -110,28 +98,7 @@ const SnapUIRendererComponent = ({
   // or if the footer component has been used.
   const hasFooter = onCancel || content?.props?.children?.[1] !== undefined;
 
-  return useDelineator ? (
-    <SnapDelineator
-      snapName={snapName}
-      type={delineatorType}
-      isCollapsable={isCollapsable}
-      isCollapsed={isCollapsed}
-      onClick={onClick}
-      boxProps={boxProps}
-      disablePadding
-    >
-      <Box className="snap-ui-renderer__content">
-        <SnapInterfaceContextProvider
-          snapId={snapId}
-          interfaceId={interfaceId}
-          initialState={initialState}
-          context={context}
-        >
-          <MetaMaskTemplateRenderer sections={sections} />
-        </SnapInterfaceContextProvider>
-      </Box>
-    </SnapDelineator>
-  ) : (
+  return (
     <SnapInterfaceContextProvider
       snapId={snapId}
       interfaceId={interfaceId}
@@ -161,18 +128,12 @@ export const SnapUIRenderer = memo(
 
 SnapUIRendererComponent.propTypes = {
   snapId: PropTypes.string,
-  delineatorType: PropTypes.string,
-  isCollapsable: PropTypes.bool,
-  isCollapsed: PropTypes.bool,
   isLoading: PropTypes.bool,
   isPrompt: PropTypes.bool,
   inputValue: PropTypes.string,
   onInputChange: PropTypes.func,
   placeholder: PropTypes.string,
-  onClick: PropTypes.func,
-  boxProps: PropTypes.object,
   interfaceId: PropTypes.string,
-  useDelineator: PropTypes.bool,
   useFooter: PropTypes.bool,
   onCancel: PropTypes.func,
   contentBackgroundColor: PropTypes.string,