No more need to expose a special API for MM

They don't appaer to have ever used it anyway

common/extensions/api/_brave_wallet_api_features.json

@@ -4,7 +4,6 @@
 // Command to get allowlist ID:
 // Brave Shields          A321D47A2B4CA86898167A55CA8B2E02385EA7CD: echo -n mnojpmjdmbbfmejpflffifhffcmidifd | openssl sha1 | tr '[:lower:]' '[:upper:]'
 // Ethereum Remote Client 21070F3D60711361C1210B870439BE49B5D995F4: echo -n odbfpeeihdkbihmopkbjmoonfanlbfcl | openssl sha1 | tr '[:lower:]' '[:upper:]'
-// MetaMask               25A63DB284EE093DE479761CF1802EF95B19FDAC: echo -n nkbihfbeogaeaoehlefnkodbefgpgknn | openssl sha1 | tr '[:lower:]' '[:upper:]'
 
 {
   "braveWallet": [{
@@ -67,8 +66,7 @@
     "contexts": ["blessed_extension"],
     "component_extensions_auto_granted": false,
     "allowlist": [
-      "21070F3D60711361C1210B870439BE49B5D995F4",
-      "25A63DB284EE093DE479761CF1802EF95B19FDAC"
+      "21070F3D60711361C1210B870439BE49B5D995F4"
     ]
   },
   "braveWallet.getWeb3ProviderList": {