refactor(locale): cs_CZ state_abbr not applicable

src/locales/cs_CZ/location/state_abbr.ts

@@ -1,5 +1 @@
-import states from './state';
-
-// at the time of adding this I was not able to find
-// any information on the existance of state abbreviations
-export default states;
+export default null;

test/all_functional.spec.ts

@@ -30,7 +30,7 @@ const BROKEN_LOCALE_METHODS = {
   },
   location: {
     state: ['az', 'nb_NO', 'ro_MD', 'sk'],
-    stateAbbr: ['ro_MD', 'sk'],
+    stateAbbr: ['cs_CZ', 'ro_MD', 'sk'],
     streetName: [
       'af_ZA',
       'ar',