Get rid of static jsonValidation as it conflicts with the dynamic one

Author: fhammerschmidt

package.json

@@ -25,7 +25,8 @@
     "vscode": "^1.68.0"
   },
   "activationEvents": [
-    "onLanguage:rescript"
+    "onLanguage:rescript",
+    "onLanguage:json"
   ],
   "main": "./client/out/extension",
   "contributes": {
@@ -45,15 +46,6 @@
         }
       }
     ],
-    "jsonValidation": [
-      {
-        "fileMatch": [
-          "bsconfig.json",
-          "rescript.json"
-        ],
-        "url": "https://raw.githubusercontent.com/rescript-lang/rescript-compiler/master/docs/docson/build-schema.json"
-      }
-    ],
     "commands": [
       {
         "command": "rescript-vscode.create_interface",