MAINT-570 Remove unused memory tracking system LLMemType

indra/llcharacter/llmotioncontroller.cpp

indra/llcommon/CMakeLists.txt

indra/llcommon/llallocator.cpp

indra/llcommon/llallocator.h

indra/llcommon/llmemory.h

indra/llcommon/llmemtype.cpp

indra/llcommon/llmemtype.h

indra/llimage/llimage.cpp

indra/llimage/llimage.h

indra/llimage/llimagej2c.cpp

indra/llinventory/llinventory.h

indra/llmath/llvolume.cpp

indra/llmath/llvolume.h

indra/llmath/llvolumemgr.cpp

indra/llmessage/llbuffer.cpp

indra/llmessage/llbufferstream.cpp

indra/llmessage/llcachename.cpp

indra/llmessage/lliohttpserver.cpp

indra/llmessage/lliosocket.cpp

indra/llmessage/llpumpio.cpp