fixed clean_gmock and clean_gtest commands in makefile
fixed clean_gmock and clean_gtest commands in makefile

Intel-HLS/TileDB,kavskalyan/TileDB,TileDB-Inc/TileDB,kavskalyan/TileDB,npapa/TileDB,Intel-HLS/TileDB,TileDB-Inc/TileDB,TileDB-Inc/TileDB,TileDB-Inc/TileDB,npapa/TileDB