Drop some unused boost lexical_cast includes and associated MSVC pragmas.

indra/newview/llvoavatar.cpp

@@ -24,12 +24,6 @@
  * $/LicenseInfo$
  */
 
-#if LL_MSVC
-// disable warning about boost::lexical_cast returning uninitialized data
-// when it fails to parse the string
-#pragma warning (disable:4701)
-#endif
-
 #include "llviewerprecompiledheaders.h"
 
 #include "llvoavatar.h"
@@ -130,13 +124,7 @@
 #include "rlvhandler.h"
 // [/RLVa:KB]
 
-#if LL_MSVC
-// disable boost::lexical_cast warning
-#pragma warning (disable:4702)
-#endif
-
 #include <boost/algorithm/string/replace.hpp>
-#include <boost/lexical_cast.hpp>
 
 #if LL_DARWIN
 size_t strnlen(const char *s, size_t n)