Remove the future flag from the ChromeVariations policy

The policy is now ready for prime time.

BUG=1034641

Change-Id: I302b6ca48c0745f0c356205c7591b41706e35b2b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2071267
Commit-Queue: Julian Pastarmov <pastarmovj@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Auto-Submit: Julian Pastarmov <pastarmovj@chromium.org>
Reviewed-by: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744311}

components/policy/resources/policy_templates.json

@@ -11570,12 +11570,11 @@
           'caption': '''Disable all variations''',
         },
       ],
-      'supported_on': ['chrome.*:81-', 'chrome_os:81-'],
+      'supported_on': ['chrome.*:82-', 'chrome_os:82-'],
       'features': {
         'dynamic_refresh': True,
         'per_profile': False,
       },
-      'future': True,
       'example_value': 1,
       'id': 663,
       'caption': '''Determine the availability of variations''',