Revert "fix lint error"

This reverts commit 9d2b141fd777f30b10ffd2ff88d8f0e6f2378cfc.

apps/app/src/components/UncontrolledCodeMirror.tsx

@@ -5,11 +5,6 @@ import React, {
 import { commands, Editor } from 'codemirror';
 import { ICodeMirror, UnControlled as CodeMirror } from 'react-codemirror2';
 
-declare global {
-  // eslint-disable-next-line vars-on-top, no-var
-  var CodeMirror: any;
-}
-
 // set save handler
 // CommandActions in @types/codemirror does not include 'save' but actualy exists
 // https://codemirror.net/5/doc/manual.html#commands