av1_inv_txfm2d_test: Remove suffix on local variable name
av1_inv_txfm2d_test: Remove suffix on local variable name

Change-Id: I7d720a755f44f0c0094c9262d3e22ac0fd0edba5

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom