Removed nonexsistent className props copy-pasted for PrimaryButton

src/forms/ContactDetailsForm/ContactDetailsForm.js

@@ -316,7 +316,6 @@ class ContactDetailsFormComponent extends Component {
               <div className={css.bottomWrapper}>
                 {genericError}
                 <PrimaryButton
-                  className={css.submitButton}
                   type="submit"
                   inProgress={inProgress}
                   ready={pristineSinceLastSubmit}

src/forms/LoginForm/LoginForm.js

@@ -93,12 +93,7 @@ const LoginFormComponent = props => (
                 />
               </span>
             </p>
-            <PrimaryButton
-              className={css.submitButton}
-              type="submit"
-              inProgress={submitInProgress}
-              disabled={submitDisabled}
-            >
+            <PrimaryButton type="submit" inProgress={submitInProgress} disabled={submitDisabled}>
               <FormattedMessage id="LoginForm.logIn" />
             </PrimaryButton>
           </div>

src/forms/PasswordChangeForm/PasswordChangeForm.js

@@ -183,7 +183,6 @@ class PasswordChangeFormComponent extends Component {
               <div className={css.bottomWrapper}>
                 {genericFailure}
                 <PrimaryButton
-                  className={css.submitButton}
                   type="submit"
                   inProgress={inProgress}
                   ready={ready}

src/forms/SignupForm/SignupForm.js

@@ -184,12 +184,7 @@ const SignupFormComponent = props => (
                 />
               </span>
             </p>
-            <PrimaryButton
-              className={css.submitButton}
-              type="submit"
-              inProgress={submitInProgress}
-              disabled={submitDisabled}
-            >
+            <PrimaryButton type="submit" inProgress={submitInProgress} disabled={submitDisabled}>
               <FormattedMessage id="SignupForm.signUp" />
             </PrimaryButton>
           </div>