We don't need to flush DCache when launching payloads.

Fixes a derp as well.

loader/source/memory.c

@@ -7,9 +7,4 @@ void memcpy(void *dest, const void *src, u32 size)
 
     for(u32 i = 0; i < size; i++)
         destc[i] = srcc[i];
-}
-
-void cleanInvalidateDCacheAndDMB(void)
-{
-    ((void (*)())0xFFFF0830)(); //Why write our own code when it's well implemented in the unprotected bootROM?
 }