Revert "Fix dimuon thresholds."

This reverts commit f864f741c684131555885485d75a44ddf8887d69.
Revert "Fix conflicts during merge prior to pull request."

This reverts commit e6f68b80cb95acc10a21068bf40d3313e8b6e128, reversing
changes made to f864f741c684131555885485d75a44ddf8887d69.

Cancel the unfortunate "git cms-merge-topic CMSSW_7_2_X" command that had removed all our developments.