Corrected method documentation for MetaData.drop_all().
Corrected method documentation for MetaData.drop_all().

alex/sqlalchemy,monetate/sqlalchemy,wujuguang/sqlalchemy,Akrog/sqlalchemy,halfcrazy/sqlalchemy,robin900/sqlalchemy,inspirehep/sqlalchemy,Cito/sqlalchemy,wfxiang08/sqlalchemy,brianv0/sqlalchemy,graingert/sqlalchemy,pdufour/sqlalchemy,alex/sqlalchemy,WinterNis/sqlalchemy,davidjb/sqlalchemy,itkovian/sqlalchemy,elelianghh/sqlalchemy,sandan/sqlalchemy,halfcrazy/sqlalchemy,276361270/sqlalchemy,Cito/sqlalchemy,Cito/sqlalchemy,olemis/sqlalchemy,WinterNis/sqlalchemy,bootandy/sqlalchemy,davidjb/sqlalchemy,j5int/sqlalchemy,inspirehep/sqlalchemy,monetate/sqlalchemy,dstufft/sqlalchemy,olemis/sqlalchemy,robin900/sqlalchemy,sqlalchemy/sqlalchemy,ThiefMaster/sqlalchemy,EvaSDK/sqlalchemy,alex/sqlalchemy,276361270/sqlalchemy,dstufft/sqlalchemy,wfxiang08/sqlalchemy,graingert/sqlalchemy,pdufour/sqlalchemy,sandan/sqlalchemy,davidfraser/sqlalchemy,bdupharm/sqlalchemy,j5int/sqlalchemy,EvaSDK/sqlalchemy,epa/sqlalchemy,brianv0/sqlalchemy,bootandy/sqlalchemy,davidfraser/sqlalchemy,hsum/sqlalchemy,zzzeek/sqlalchemy,hsum/sqlalchemy,bdupharm/sqlalchemy,wujuguang/sqlalchemy,itkovian/sqlalchemy,Akrog/sqlalchemy,ThiefMaster/sqlalchemy,elelianghh/sqlalchemy,epa/sqlalchemy