Revert "(#12339) Improving documentation around Puppet::Util::Terminal.width."

This reverts commit 0e7d2f0ecfd778d04f3cbbc677ae6673bcf12a12.

That was part of a series of enhancements to the integrated Puppet Module Tool
that broke on Ruby 1.8.5.

Signed-off-by: Daniel Pittman <daniel@puppetlabs.com>