Really remove config.h

sky/engine/wtf/dtoa/bignum.cc

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-#include "sky/engine/config.h"
 
 #include "sky/engine/wtf/dtoa/bignum.h"
 #include "sky/engine/wtf/dtoa/utils.h"
 
 namespace WTF {
 
 namespace double_conversion {
 
     Bignum::Bignum()
     : bigits_(bigits_buffer_, kBigitCapacity), used_digits_(0), exponent_(0) {
@@ skipping 722 matching lines @@
             borrow = difference >> (kChunkSize - 1);
             ++i;
         }
         Clamp();
     }
 
 
 }  // namespace double_conversion
 
 } // namespace WTF