Deprecate vue/valid-v-bind-sync

Author: FloEdelmann

docs/rules/index.md

@@ -113,7 +113,7 @@ Rules in this category are enabled for all presets provided by eslint-plugin-vue
 | [vue/valid-model-definition] | require valid keys in model option | :no_entry_sign: | :two::warning: |
 | [vue/valid-next-tick] | enforce valid `nextTick` function calls | :wrench::bulb: | :three::two::warning: |
 | [vue/valid-template-root] | enforce valid template root |  | :three::two::warning: |
-| [vue/valid-v-bind-sync] | enforce valid `.sync` modifier on `v-bind` directives |  | :two::warning: |
+| [vue/valid-v-bind-sync] | enforce valid `.sync` modifier on `v-bind` directives | :no_entry_sign: | :two::warning: |
 | [vue/valid-v-bind] | enforce valid `v-bind` directives |  | :three::two::warning: |
 | [vue/valid-v-cloak] | enforce valid `v-cloak` directives |  | :three::two::warning: |
 | [vue/valid-v-else-if] | enforce valid `v-else-if` directives |  | :three::two::warning: |
@@ -352,6 +352,7 @@ The following rules extend the rules provided by ESLint itself and apply them to
 | [vue/no-v-for-template-key] | (no replacement) |
 | [vue/no-v-model-argument] | (no replacement) |
 | [vue/valid-model-definition] | (no replacement) |
+| [vue/valid-v-bind-sync] | (no replacement) |
 
 ## Removed
 

docs/rules/valid-v-bind-sync.md

@@ -10,6 +10,7 @@ since: v7.0.0
 
 > enforce valid `.sync` modifier on `v-bind` directives
 
+- :no_entry_sign: This rule was **deprecated**.
 - :gear: This rule is included in all of `"plugin:vue/vue2-essential"`, `*.configs["flat/vue2-essential"]`, `"plugin:vue/vue2-strongly-recommended"`, `*.configs["flat/vue2-strongly-recommended"]`, `"plugin:vue/vue2-recommended"` and `*.configs["flat/vue2-recommended"]`.
 
 This rule checks whether every `.sync` modifier on `v-bind` directives is valid.

lib/rules/valid-v-bind-sync.js

@@ -79,6 +79,7 @@ module.exports = {
       url: 'https://eslint.vuejs.org/rules/valid-v-bind-sync.html'
     },
     fixable: null,
+    deprecated: true,
     schema: [],
     messages: {
       unexpectedInvalidElement: