clear code

iOSClient/Brand/PickerFileProvider.plist

@@ -31,7 +31,5 @@
 		<key>NSExtensionPrincipalClass</key>
 		<string>$(PRODUCT_MODULE_NAME).FileProvider</string>
 	</dict>
-	<key>NSExtensionFileProviderSupportsEnumeration</key>
-	<true/>
 </dict>
 </plist>