Fix duplicate definitions with FreeType

modules/freetype/SCsub

@@ -17,18 +17,15 @@ if env['builtin_freetype']:
         "src/base/ftbitmap.c",
         "src/base/ftcid.c",
         "src/base/ftdebug.c",
-        "src/base/ftfntfmt.c",
         "src/base/ftfstype.c",
         "src/base/ftgasp.c",
         "src/base/ftglyph.c",
         "src/base/ftgxval.c",
         "src/base/ftinit.c",
-        "src/base/ftlcdfil.c",
         "src/base/ftmm.c",
         "src/base/ftotval.c",
         "src/base/ftpatent.c",
         "src/base/ftpfr.c",
-        "src/base/ftpic.c",
         "src/base/ftstroke.c",
         "src/base/ftsynth.c",
         "src/base/ftsystem.c",