chore: Button cruft cleanup (#11342)

* toggleSchedule

* cleaning up run query button

* removing unnecessary (subtle!) style overrides

* bulk action classname to button style prop

* nixing btn-primary

* nixing cancelQuery class

* togglesave

* nixing autocomplete class

* linting

* nixing button classes of 'ok' and 'reset'

* unoing diagnostic test

* begrudgingly adding an m-r-3 class... for now

* this is not a class to worry about

* test fixes for limit control

* updating TODO notes, calling it a day for now.

* gah... copy paste error.

superset-frontend/src/SqlLab/components/SaveQuery.tsx

@@ -184,7 +184,7 @@ export default function SaveQuery({
             >
               {isSaved ? t('Save New') : t('Save')}
             </Button>
-            <Button onClick={close} className="cancelQuery" cta>
+            <Button onClick={close} data-test="cancel-query" cta>
               {t('Cancel')}
             </Button>
           </Col>
@@ -195,7 +195,7 @@ export default function SaveQuery({
 
   return (
     <span className="SaveQuery">
-      <Button buttonSize="small" className="toggleSave" onClick={toggleSave}>
+      <Button buttonSize="small" onClick={toggleSave}>
         <i className="fa fa-save" /> {t('Save')}
       </Button>
       <Modal