extraneous vim editor configuration comments

Many of the source code files have a beginning line:
vim: tabstop=4 shiftwidth=4 softtabstop=4

This should be deleted.

Change-Id: I0b7bd4e727c0597e7c7fb61d42684e908e001134
Closes-Bug: #1229324
Merge "extraneous vim editor configuration comments"