Revert "Add CqlRecordReader to take advantage of native CQL pagination"

This reverts commit 3b708f9989274cbe9e0e2a5fda6f1d0a3d96ebee.

Conflicts:

	CHANGES.txt
Merge branch 'cassandra-2.0' into cassandra-2.1

Conflicts:
	build.xml
Merge branch 'cassandra-2.1' into trunk
Fix UnsupportedOperationException on CAS timeout

patch by slebresne; reviewed by jbellis for CASSANDRA-6923
Merge branch 'cassandra-2.0' into cassandra-2.1
Merge branch 'cassandra-2.1' into trunk