Wipe the clusterfsck that was the get16bits define in HashTools.

This define takes a pointer(s8* in this case) and grabs 16bits of data from the array it points to.
This can be done the generic way on all compilers, no need for specifying it another way.

common/src/Utilities/HashTools.cpp

@@ -29,16 +29,7 @@ namespace HashTools {
 /// <seealso cref="CommonHashClass"/>
 const CommonHashClass GetCommonHash;
 
-#undef get16bits
-#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \
-  || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__)
 #define get16bits(d) (*((const u16 *) (d)))
-#endif
-
-#if !defined (get16bits)
-#define get16bits(d) ((((u32)(((const ubyte *)(d))[1])) << 8)\
-					   +(u32)(((const ubyte *)(d))[0]) )
-#endif
 
 /// <summary>
 ///   Calculates a hash value for an arbitrary set of binary data.