Remove extraneous/debug output
Drop `silent` prefixes

The silent prefix might prevent any output from autocommands, and it
should be unnecessary.

At least it should be avoided for:

    silent execute g:pydoc_open_cmd '__doc__'

Ref: https://github.com/embear/vim-localvimrc/pull/13
Merge pull request #25 from blueyed/master

Drop `silent` prefixes