nupic.framworks.opf.opf_utils.PredictionElement is never used

[rhyolight]

As described here:

# PredictionElement- represents a predicted record and its asssociated
#                     bit-string encoding for a network's sensor region and/or
#                     the classification of that input as produced by
#                     a classifier.
#
# predictionRow:  A sequence of field values where each element is the predicted
#                 value in the format specified by getDecodedFieldMetaInfo().
#                 This is the output of topDownCompute() for each encoder
#
# predictionEncodings: A sequence of numpy arrays, where each element is the
#                      binary representation of the corresponding predicted field
#                      in "predictionRow".
#
# classification: The classification category of this input.
#

PredictionElement = namedtuple("PredictionElement",
                                ("predictionRow",
                                 "predictionEncodings",
                                 "classification"))

This named tuple is seemingly never used in our codebase. The only place I found even a vague reference was in tests/integration/nupic/opf/expgenerator_test.py, but the test_PredictionElement test does not use the named tuple, nor does any other code.

[rhyolight]

Docs for PredictionElement also reference obsolete function getDecodedFieldMetaInfo.

[scottpurdy]

Probably fine to just remove it