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/spec/javascripts/sqllab/LimitControl_spec.jsx

@@ -99,7 +99,10 @@ describe('LimitControl', () => {
       wrappingComponent: ThemeProvider,
       wrappingComponentProps: { theme: supersetTheme },
     });
-    popoverContentWrapper.find('.ok').first().simulate('click');
+    popoverContentWrapper
+      .find('[data-test="limit-control-confirm"]')
+      .first()
+      .simulate('click');
     expect(wrapper.state().showOverlay).toBe(false);
   });
   it('resets and closes', () => {
@@ -114,7 +117,10 @@ describe('LimitControl', () => {
       wrappingComponent: ThemeProvider,
       wrappingComponentProps: { theme: supersetTheme },
     });
-    popoverContentWrapper.find('.reset').first().simulate('click');
+    popoverContentWrapper
+      .find('[data-test="limit-control-cancel"]')
+      .first()
+      .simulate('click');
     expect(wrapper.state().textValue).toEqual(
       defaultProps.defaultQueryLimit.toString(),
     );