Revert "Make sure we dispose of any custom editor inputs when replacing them"

This reverts commit c057a4b9.

src/vs/workbench/contrib/customEditor/browser/customEditors.ts

@@ -179,12 +179,6 @@ export class CustomEditorService implements ICustomEditorService {
 					replacement: input,
 					options: options ? EditorOptions.create(options) : undefined,
 				}], group);
-
-				for (const editor of existingEditors) {
-					if (editor instanceof CustomFileEditorInput) {
-						editor.dispose();
-					}
-				}
 			}
 		}
 		return this.editorService.openEditor(input, options, group);