Drop the gyp file from the module-register fixture

Nothing builds this from binding.gyp — cmake-rn drives the CMake project
directly. The sibling fixtures keep theirs to stay close to upstream
sources they were derived from, which does not apply to an addon written
here.

CMakeLists.txt is now hand-maintained rather than regenerated by
gyp-to-cmake, which skips the directory now that there is no binding.gyp.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013ugFE6vmMUVMTuoupvhMhX

Author: claude

packages/node-addon-examples/tests/module-register/binding.gyp

@@ -6,9 +6,5 @@
   "private": true,
   "dependencies": {
     "bindings": "~1.5.0"
-  },
-  "scripts": {
-    "test": "node addon.js"
-  },
-  "gypfile": true
+  }
 }