Remove unneeded includes in header, move them to source file for TrackingTruthValid.

Signed-off-by: Salvatore Di Guida <salvatore.di.guida@cern.ch>
Move histogram booking at beginRun in TrackingTruthValid.

Signed-off-by: Salvatore Di Guida <salvatore.di.guida@cern.ch>
Remove unused data member in TrackingTruthValid.

Signed-off-by: Salvatore Di Guida <salvatore.di.guida@cern.ch>
Consumes fix for TrackingTruthValid.

Signed-off-by: Salvatore Di Guida <salvatore.di.guida@cern.ch>
Remove using namespace directives in TrackingTruthValid.

Signed-off-by: Salvatore Di Guida <salvatore.di.guida@cern.ch>
Merge pull request #1893 from diguida/fix-consumes-Validation_TrackingMCTruth

DQM fixes -- Fix consumes validation tracking mc truth