chore: remove error prone rule (#678)

Now that we have fixed the build to run error prone on later
versions of Java, this rule is unnecessary.

Author: enocom

.github/renovate.json5

@@ -41,12 +41,6 @@
       ],
       commitMessagePrefix: 'chore(deps):',
     },
-    {
-      groupName: 'error-prone-core',
-      matchPackageNames: [
-        '/^com.google.errorprone:error_prone_core/',
-      ],
-    },
     {
       groupName: 'junit platform dependencies',
       matchPackageNames: [