Merge pull request #2 from hannobraun/wasm

Remove unused `include`s to improve portability

src/predicates.c

@@ -113,15 +113,6 @@
 /*                                                                           */
 /*****************************************************************************/
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#ifdef _MSC_VER
-#include <time.h>
-#else
-#include <sys/time.h>
-#endif
-
 /* On some machines, the exact arithmetic routines might be defeated by the  */
 /*   use of internal extended precision floating-point registers.  Sometimes */
 /*   this problem can be fixed by defining certain values to be volatile,    */