Install util updates the plugin path if it is set to the default for 3.1.6 and earlier.   - Remove some unused code.
Install util updates the plugin path if it is set to
the default for 3.1.6 and earlier.
  - Remove some unused code.

stefanwerfling/pgina,stefanwerfling/pgina,stefanwerfling/pgina,pgina/pgina,pgina/pgina,pgina/pgina