fix(remove): submit errors are not removed on "fields.remove" call

Author: Vitaliy Parkhomenko

src/remove.js

@@ -30,7 +30,7 @@ const remove: Mutator<any> = (
 
         // delete any submitErrors for this array item
         // if root key of array item and has submitErrors
-        if (!tokens[2]) {
+        if (key === `${name}[${index}]`) {
           // do it only for removable index
           // Can array be in root?
           // formState.submitErrors[]