Revert "SERVER-14626 Implement quorum check functionality for use in replcia set initiate and reconfig."

This reverts commit 50789ae076281da32412ef6bdf3145fc4b070f16.
Unit test is sometimes failing due to an unhandled signal.
SERVER-14714: Add stack trace signal handler
SERVER-14181: Dump dbtest & python processes, add timeout
Merge remote-tracking branch 'upstream/master'