Chore: Remove empty and leftover files (#55757)

public/app/core/mod_defs.d.ts

@@ -1,14 +0,0 @@
-declare module 'app/core/controllers/all' {
-  let json: any;
-  export { json };
-}
-
-declare module 'app/core/routes/all' {
-  let json: any;
-  export { json };
-}
-
-declare module 'app/core/services/all' {
-  let json: any;
-  export default json;
-}

public/app/features/all.ts

@@ -1,3 +1,2 @@
 import './plugins/all';
 import './dashboard';
-import './profile/all';

public/sass/_grafana.scss

@@ -48,7 +48,6 @@
 @import 'components/panel_pluginlist';
 @import 'components/panel_singlestat';
 @import 'components/panel_table';
-@import 'components/panel_text';
 @import 'components/panel_heatmap';
 @import 'components/tagsinput';
 @import 'components/tables_lists';