Use directly 'near' for WaveLet files

[todo]

gdal2tiles/gdal2tiles.py

Lines 988 to 993 in 18e7284

	# TODO: Use directly 'near' for WaveLet files
	else:
	# Big ReadRaster query in memory scaled to the tile_size - all but 'near'
	# algo
	dsquery = mem_drv.Create('', querysize, querysize, tilebands)
	# TODO: fill the null value in case a tile without alpha is produced (now

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This issue was generated by todo based on a TODO comment in 18e7284. It's been assigned to @kylebarron because they committed the code.