StripCulsterUnpacking and 8E33 removal

Migration to ConfDB code template CMSSW_7_1_0_pre3.
Modified StripClusterUnpacking from Vincenzo (following integration of PR #2466).
Technical change only, no changes in HLT physics performance or HLT objects.
Removal of obsolete frozen menu "8E33v2" (use "2013" frozen menu instead).