RESULT DIFFERENCE ON PB2

There were some Result Content Mismatch Issue on the
explain_for_connection_(rqg_json/rqg) tests. Some of the tests added in
these were taken from RQG genereated queries which are quiet long and at
times shows random Explain Plans. As a fix smaller and specific queries
are taken from these 2 tests and moved into
explain_for_connection_small_(json/trad) tests and these 2 tests are
deleted now.