Disabled C++ test; ClassifierRegionTest.asRealDecoder

[dkeeney]

While processing Pull Request #1029 on C++ test failed on MAC OSx. It does not seem to be related to the build changes so putting it in a separate Issue.
ClassifierRegionTest.DISABLED_asRealDecoder

[dkeeney]

TemporalMemoryTest.DISABLED_testExtraActive was also disabled.