cqle: remove special handling for bool in ValueQuoter
cqle: remove special handling for bool in ValueQuoter

now that cql_quote does not quote bool types, this is not needed

PYTHON-596

coldeasy/python-driver,stef1927/python-driver,stef1927/python-driver,coldeasy/python-driver,thobbs/python-driver,mambocab/python-driver,vipjml/python-driver,vipjml/python-driver,datastax/python-driver,datastax/python-driver,thelastpickle/python-driver,thelastpickle/python-driver,mambocab/python-driver,thobbs/python-driver