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/SaveQuery_spec.jsx

@@ -48,7 +48,7 @@ describe('SavedQuery', () => {
     const wrapper = shallow(<SaveQuery {...mockedProps} />);
     const modal = wrapper.find(Modal);
 
-    expect(modal.find('.cancelQuery')).toHaveLength(1);
+    expect(modal.find('[data-test="cancel-query"]')).toHaveLength(1);
   });
   it('has 2 FormControls', () => {
     const wrapper = shallow(<SaveQuery {...mockedProps} />);