remove serverVersion

Author: Varun Rathore

src/main/java/com/google/firebase/remoteconfig/ServerTemplateData.java

@@ -144,8 +144,8 @@ ServerTemplateData setParameterGroups(
     return this;
   }
 
-  ServerTemplateData setVersion(Version serverVersion) {
-    this.version = serverVersion;
+  ServerTemplateData setVersion(Version version) {
+    this.version = version;
     return this;
   }