Removed gradient view observers on dealloc
Removed gradient view observers on dealloc

cobook/sstoolkit,samsoffes/sstoolkit,soffes/sstoolkit,carabina/sstoolkit,andaluz/sstoolkit,Amnysia/SSToolkit,MugunthKumar/sstoolkit,sideci-sample/sideci-sample-sstoolkit,TDness/sstoolkit,SuPair/sstoolkit,zjh171/sstoolkit,zilaiyedaren/sstoolkit,lijie121210/sstoolkit,Amnysia/SSToolkit,samsoffes/sstoolkit,rtsbtx/sstoolkit,MugunthKumar/sstoolkit,k131050059/sstoolkit,tastefulworks/twtoolkit