Remove vp10_fwd_txfm2d_sse4_test.cc

Functions vp10_fwd_txfm2d_#x#_sse4_1 tested in this file
will be tested in vp10_fhts#x#_test.cc
Remove this to avoid duplication

Change-Id: Iaf21ab85b9a164fcf2a4574b3e13217e43b6255e
2 files changed