Remove baseline from vcpkg

As vcpkg and boost need updates for even "minor" compiler updates, trying to lock to a version just ends up being more hassle than tracking head

vcpkg.json

@@ -17,6 +17,5 @@
         "qt5-base"
       ]
     }
-  },
-  "builtin-baseline": "9edb1b8e590cc086563301d735cae4b6e732d2d2"
+  }
 }