Update gRPC module maintainers in metadata.json. (#6457)

Author: yuanweiz

modules/grpc/metadata.json

@@ -1,71 +1,47 @@
 {
     "homepage": "https://github.com/grpc/grpc",
     "maintainers": [
-        {
-            "email": "[email protected]",
-            "github": "veblush",
-            "github_user_id": 2793282,
-            "name": "Esun Kim"
-        },
         {
             "email": "[email protected]",
             "github": "pawbhard",
-            "github_user_id": 13415978,
-            "name": "Pawan Bhardwaj"
-        },
-        {
-            "email": "[email protected]",
-            "github": "eugeneo",
-            "github_user_id": 287917,
-            "name": "Eugene Ostroukhov"
-        },
-        {
-            "email": "[email protected]",
-            "github": "drfloob",
-            "github_user_id": 295906,
-            "name": "Adam Heller"
+            "name": "Pawan Bhardwaj",
+            "github_user_id": 13415978
         },
         {
             "email": "[email protected]",
             "github": "rishesh007",
-            "github_user_id": 40896662,
-            "name": "Rishesh Agarwal"
+            "name": "Rishesh Agarwal",
+            "github_user_id": 40896662
         },
         {
             "email": "[email protected]",
             "github": "markdroth",
-            "github_user_id": 18664614,
-            "name": "Mark Roth"
+            "name": "Mark Roth",
+            "github_user_id": 18664614
         },
         {
-            "email": "yashkt@google.com",
-            "github": "yashykt",
-            "github_user_id": 4181124,
-            "name": "Yash Tibrewal"
+            "email": "sergiitk@google.com",
+            "github": "sergiitk",
+            "name": "Sergii Tkachenko",
+            "github_user_id": 672669
         },
         {
-            "email": "apolcyn@google.com",
-            "github": "apolcyn",
-            "github_user_id": 9566254,
-            "name": "Alexander Polcyn"
+            "email": "weizheyuan@google.com",
+            "github": "yuanweiz",
+            "name": "Weizhe Yuan",
+            "github_user_id": 5679340
         },
         {
-            "email": "sergiitk@google.com",
-            "github": "sergiitk",
-            "github_user_id": 672669,
-            "name": "Sergii Tkachenko"
+            "email": "asheshvidyut@google.com",
+            "github": "asheshvidyut",
+            "name": "Ashesh Vidyut",
+            "github_user_id": 134911583
         },
         {
             "email": "[email protected]",
             "github": "sreenithi",
-            "github_user_id": 22791051,
-            "name": "Sreenithi Sridharan"
-        },
-        {
-            "email": "[email protected]",
-            "github": "stanley-cheung",
-            "github_user_id": 11674202,
-            "name": "Stanley Cheung"
+            "name": "Sreenithi Sridharan",
+            "github_user_id": 22791051
         }
     ],
     "repository": [