Fix random warnings in several plugins

Summary: Click through plugins and fix warnings until tired.

Reviewed By: jknoxville

Differential Revision: D19253740

fbshipit-source-id: 87b6d6b103ee51c7b5579a128a15c3bb9d71b432

src/reducers/healthchecks.tsx

@@ -7,8 +7,8 @@
  * @format
  */
 
+import {produce} from 'immer';
 import {Actions} from './';
-import {produce} from 'flipper';
 
 export type State = {
   healthcheckReport: HealthcheckReport;