basic working removeCommentTag mutation

graph/typeDefs.graphql

@@ -638,6 +638,13 @@ type AddCommentTagResponse implements Response {
   errors: [UserError]  
 }
 
+# Response to removeCommentTag mutation
+type RemoveCommentTagResponse implements Response {
+  # An array of errors relating to the mutation that occured.
+  comment: Comment
+  errors: [UserError]  
+}
+
 # All mutations for the application are defined on this object.
 type RootMutation {
 
@@ -664,6 +671,9 @@ type RootMutation {
 
   # Add tag to comment.
   addCommentTag(id: ID!, tag: String!): AddCommentTagResponse
+
+  # Remove tag from comment.
+  removeCommentTag(id: ID!, tag: String!): RemoveCommentTagResponse
 }
 
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