fix: resolve video misclassification when filename contains 'audio' and remove legacy Kemono/Coomer providers

lib/features/providers/presentation/provider_form_screen.dart

@@ -288,14 +288,6 @@ class _ProviderFormScreenState extends ConsumerState<ProviderFormScreen> {
                           value: 'realbooru_html',
                           child: Text('Realbooru HTML'),
                         ),
-                        DropdownMenuItem(
-                          value: 'kemono',
-                          child: Text('Kemono Party artists'),
-                        ),
-                        DropdownMenuItem(
-                          value: 'coomer',
-                          child: Text('Coomer Party artists'),
-                        ),
                         DropdownMenuItem(
                           value: 'custom',
                           child: Text('Custom REST API'),

lib/features/providers/presentation/widgets/provider_card.dart

@@ -305,16 +305,6 @@ class ProviderCard extends StatelessWidget {
           Icons.pets_rounded,
           'e621 / e926',
         ),
-      'kemono' => (
-          const Color(0xFFEC4899),
-          Icons.palette_rounded,
-          'Kemono',
-        ),
-      'coomer' => (
-          const Color(0xFF06B6D4),
-          Icons.collections_rounded,
-          'Coomer',
-        ),
       _ => (
           const Color(0xFF6366F1),
           Icons.hub_rounded,