remove cache.clear() from tests setup/teardown
remove cache.clear() from tests setup/teardown

edmorley/treeherder,moijes12/treeherder,KWierso/treeherder,moijes12/treeherder,akhileshpillai/treeherder,rail/treeherder,tojon/treeherder,KWierso/treeherder,moijes12/treeherder,glenn124f/treeherder,vaishalitekale/treeherder,avih/treeherder,parkouss/treeherder,avih/treeherder,sylvestre/treeherder,parkouss/treeherder,adusca/treeherder,tojonmz/treeherder,akhileshpillai/treeherder,jgraham/treeherder,jgraham/treeherder,tojon/treeherder,deathping1994/treeherder,glenn124f/treeherder,moijes12/treeherder,adusca/treeherder,rail/treeherder,adusca/treeherder,rail/treeherder,wlach/treeherder,deathping1994/treeherder,rail/treeherder,adusca/treeherder,tojonmz/treeherder,glenn124f/treeherder,kapy2010/treeherder,kapy2010/treeherder,parkouss/treeherder,sylvestre/treeherder,tojon/treeherder,akhileshpillai/treeherder,edmorley/treeherder,gbrmachado/treeherder,tojonmz/treeherder,wlach/treeherder,edmorley/treeherder,edmorley/treeherder,kapy2010/treeherder,jgraham/treeherder,glenn124f/treeherder,kapy2010/treeherder,tojon/treeherder,adusca/treeherder,KWierso/treeherder,kapy2010/treeherder,akhileshpillai/treeherder,wlach/treeherder,moijes12/treeherder,jgraham/treeherder,parkouss/treeherder,sylvestre/treeherder,KWierso/treeherder,rail/treeherder,avih/treeherder,deathping1994/treeherder,avih/treeherder,moijes12/treeherder,wlach/treeherder,vaishalitekale/treeherder,gbrmachado/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,glenn124f/treeherder,vaishalitekale/treeherder,tojonmz/treeherder,sylvestre/treeherder,glenn124f/treeherder,vaishalitekale/treeherder,avih/treeherder,wlach/treeherder,parkouss/treeherder,gbrmachado/treeherder,deathping1994/treeherder,parkouss/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,vaishalitekale/treeherder,rail/treeherder,jgraham/treeherder,jgraham/treeherder,wlach/treeherder,tojonmz/treeherder,sylvestre/treeherder,tojonmz/treeherder,vaishalitekale/treeherder,deathping1994/treeherder,sylvestre/treeherder,gbrmachado/treeherder,deathping1994/treeherder,avih/treeherder,adusca/treeherder