fix: Remove ununsed variable

src/redux/source/sourcesSlice.ts

@@ -3,19 +3,6 @@ import sourceList from '../../sources/sources.json';
 
 import { Source } from '../../sources/types';
 
-const enum SourceLanguages {
-  EN = 'English',
-  ES = 'Spanish',
-  JP = 'Japanese',
-  ZH = 'Chinese',
-  AR = 'Arabic',
-  ID = 'Indonesian',
-  RU = 'Russian',
-  TR = 'Turkish',
-  FR = 'French',
-  PT = 'Portuguese (Brazil)',
-}
-
 interface SourcesState {
   allSources: Source[];
   pinnedSources: number[];