Remove redundant hints

Author: walbourn

Texconv/texconv.cpp

@@ -308,14 +308,10 @@ namespace
         { L"ignoremips", L"ignore-mips" },
         { L"inverty", L"invert-y" },
         { L"keepcoverage", L"keep-coverage" },
-        { L"permissive", L"permissive" },
         { L"reconstructz", L"reconstruct-z" },
         { L"rotatecolor", L"rotate-color" },
         { L"singleproc", L"single-proc" },
-        { L"swizzle", L"swizzle" },
         { L"tgazeroalpha", L"tga-zero-alpha" },
-        { L"timing", L"timing" },
-        { L"tonemap", L"tonemap" },
         { L"wiclossless", L"wic-lossless" },
         { L"wicmulti", L"wic-multiframe" },
         { L"x2bias", L"x2-bias" },