removed superfluous NSLog() in the new NSDocument class method+readableTypes
removed superfluous NSLog() in the new NSDocument class method+readableTypes

liruqi/cocotron,liruqi/cocotron,mpw/marcelweiher-libobjc2,uptime-services/development-arts,berkus/cocotron,uptime-services/development-arts,liruqi/cocotron,berkus/cocotron,berkus/cocotron,uptime-services/development-arts,uptime-services/development-arts,mpw/marcelweiher-libobjc2,berkus/cocotron,liruqi/cocotron,mpw/marcelweiher-libobjc2,mpw/marcelweiher-libobjc2