stb_truetype - remove duplicate definition

stb_truetype.h

@@ -43,7 +43,7 @@
 //       Hou Qiming                 Derek Vinyard
 //       Rob Loach                  Cort Stratton
 //       Kenney Phillis Jr.         github:oyvindjam
-//       
+//                                  github:vassvik
 //       
 // VERSION HISTORY
 //
@@ -418,11 +418,6 @@ int main(int arg, char **argv)
    #define STBTT_fabs(x)      fabs(x)
    #endif
 
-   #ifndef STBTT_fabs
-   #include <math.h>
-   #define STBTT_fabs(x)      fabs(x)
-   #endif
-
    // #define your own functions "STBTT_malloc" / "STBTT_free" to avoid malloc.h
    #ifndef STBTT_malloc
    #include <stdlib.h>