Refactor: Clean up Discover screen components and ServerDataRepository

- Removed unused imports and variables in `DiscoverServersList.kt`, `ServerInviteHandler.kt`, and `ServerInviteDialog.kt` to improve code cleanliness.
- Deleted the unused `getServerCategories` function from `ServerDataRepository.kt`.

app/src/main/java/chat/revolt/api/routes/googlesheets/ServerDataRepository.kt

@@ -29,26 +29,7 @@ class ServerDataRepository {
         }
         emit(servers)
     }.flowOn(Dispatchers.IO)
-    
-    /**
-     * Fetches server categories from Google Sheets and returns as a Flow
-     * @param sheetUrl The URL of the published Google Sheet (CSV or JSON)
-     * @return Flow of ServerCategory list
-     */
-    fun getServerCategories(sheetUrl: String): Flow<List<ServerCategory>> = flow {
-        val categories = GoogleSheetsService.fetchSheetData(
-            sheetUrl = sheetUrl
-        ) { rowData ->
-            ServerCategory(
-                id = rowData["id"] ?: "",
-                name = rowData["name"] ?: "",
-                description = rowData["description"] ?: "",
-                iconName = rowData["iconName"] ?: "",
-                sortOrder = rowData["sortOrder"]?.toIntOrNull() ?: 0
-            )
-        }
-        emit(categories)
-    }.flowOn(Dispatchers.IO)
+
 }
 
 /**

app/src/main/java/chat/revolt/composables/screens/chat/discover/DiscoverServersList.kt

@@ -21,9 +21,6 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.ColorFilter

app/src/main/java/chat/revolt/composables/screens/chat/discover/ServerInviteDialog.kt

@@ -1,15 +1,11 @@
 package chat.revolt.composables.screens.chat.discover
 
-import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button

app/src/main/java/chat/revolt/composables/screens/chat/discover/ServerInviteHandler.kt

@@ -22,7 +22,6 @@ fun ServerInviteHandler(
     onDismiss: () -> Unit = {},
     onJoinSuccess: () -> Unit = {}
 ) {
-    val context = LocalContext.current
     val scope = rememberCoroutineScope()
     var isLoading by remember { mutableStateOf(true) }
     var showDialog by remember { mutableStateOf(true) }