fix: Remove validation for message signature (#8404)

app/javascript/dashboard/routes/dashboard/settings/profile/MessageSignature.vue

@@ -22,14 +22,12 @@
           :enabled-menu-options="customEditorMenuList"
           :enable-suggestions="false"
           :show-image-resize-toolbar="true"
-          @blur="$v.messageSignature.$touch"
         />
       </div>
       <woot-button
         :is-loading="isUpdating"
         type="button"
-        :is-disabled="$v.messageSignature.$invalid"
-        @click.prevent="updateSignature()"
+        @click.prevent="updateSignature"
       >
         {{ $t('PROFILE_SETTINGS.FORM.MESSAGE_SIGNATURE_SECTION.BTN_TEXT') }}
       </woot-button>
@@ -38,7 +36,6 @@
 </template>
 
 <script>
-import { required } from 'vuelidate/lib/validators';
 import { mapGetters } from 'vuex';
 
 import WootMessageEditor from 'dashboard/components/widgets/WootWriter/Editor.vue';
@@ -59,11 +56,6 @@ export default {
       customEditorMenuList: MESSAGE_SIGNATURE_EDITOR_MENU_OPTIONS,
     };
   },
-  validations: {
-    messageSignature: {
-      required,
-    },
-  },
   computed: {
     ...mapGetters({
       currentUser: 'getCurrentUser',
@@ -79,15 +71,9 @@ export default {
       this.messageSignature = messageSignature || '';
     },
     async updateSignature() {
-      this.$v.$touch();
-      if (this.$v.$invalid) {
-        this.showAlert(this.$t('PROFILE_SETTINGS.FORM.ERROR'));
-        return;
-      }
-
       try {
         await this.$store.dispatch('updateProfile', {
-          message_signature: this.messageSignature,
+          message_signature: this.messageSignature || '',
         });
         this.errorMessage = this.$t(
           'PROFILE_SETTINGS.FORM.MESSAGE_SIGNATURE_SECTION.API_SUCCESS'