feat: Remove adjacent tracing feature flag (#103891)

We will now show the adjacent traces for all. 

For now we will keep the feature flag in place in case something should
break that we can easily enable it again (it is very unlikely that this
will happen though).
 
Follow up to: #102472

Author: JPeer264

static/app/views/performance/newTraceDetails/traceLinksNavigation/traceLinksNavigation.tsx

@@ -3,7 +3,6 @@ import {ExternalLink} from '@sentry/scraps/link';
 import {Tooltip} from '@sentry/scraps/tooltip';
 
 import {tct} from 'sentry/locale';
-import useOrganization from 'sentry/utils/useOrganization';
 import type {TraceRootEventQueryResults} from 'sentry/views/performance/newTraceDetails/traceApi/useTraceRootEvent';
 import {isTraceItemDetailsResponse} from 'sentry/views/performance/newTraceDetails/traceApi/utils';
 import {TraceLinkNavigationButton} from 'sentry/views/performance/newTraceDetails/traceLinksNavigation/traceLinkNavigationButton';
@@ -15,9 +14,7 @@ export function TraceLinksNavigation({
   rootEventResults: TraceRootEventQueryResults;
   source: string;
 }) {
-  const organization = useOrganization();
   const showLinkedTraces =
-    organization?.features.includes('trace-view-linked-traces') &&
     // Don't show the linked traces buttons when the waterfall is embedded in the replay
     // detail page, as it already contains all traces of the replay session.
     source !== 'replay';