Remove the old wl environment code.

indra/newview/CMakeLists.txt

indra/newview/lldaycyclemanager.h

indra/newview/lldrawpoolwlsky.cpp

indra/newview/llenvmanager.cpp

indra/newview/llenvmanager.h

indra/newview/llfloatereditdaycycle.cpp

indra/newview/llfloatereditdaycycle.h

indra/newview/llfloatereditsky.cpp

indra/newview/llfloaterenvironmentsettings.cpp

indra/newview/llfloaterregioninfo.cpp

indra/newview/llfloaterregioninfo.h

indra/newview/llstartup.cpp

indra/newview/llviewerdisplay.cpp

indra/newview/llviewermenu.cpp

indra/newview/llviewershadermgr.cpp

indra/newview/llvosky.cpp

indra/newview/llwaterparammanager.cpp

indra/newview/llwaterparammanager.h

indra/newview/llwaterparamset.cpp

indra/newview/llwaterparamset.h