ZP-824 Remove local $sc as it is not needed.

Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/request/folderchange.php

@@ -249,7 +249,7 @@ class FolderChange extends RequestProcessor {
             self::$deviceManager->GetStateManager()->SetSynchedFolderState($spa);
 
             // invalidate all pingable flags
-            $sc = SyncCollections::InvalidatePingableFlags();
+            SyncCollections::InvalidatePingableFlags();
         }
 
         return true;

src/lib/request/foldersync.php

@@ -261,7 +261,7 @@ class FolderSync extends RequestProcessor {
                     self::$deviceManager->GetStateManager()->SetSynchedFolderState($spa);
 
                     // invalidate all pingable flags
-                    $sc = SyncCollections::InvalidatePingableFlags();
+                    SyncCollections::InvalidatePingableFlags();
                 }
             }
         }