Remove unused function.

This Cl removes the unused ctx method from the inspector helper.

Change-Id: I3c35aeb18c29078d5bdb46e3d1a2c5d4d6dcce54
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29400
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>

src/inspector_test.cc

@@ -41,7 +41,6 @@ class InspectorHelper {
     mod()->AddFunction(std::move(func));
   }
 
-  Context* ctx() { return &ctx_; }
   ast::Module* mod() { return mod_.get(); }
   Inspector* inspector() { return inspector_.get(); }