Really remove config.h

sky/engine/wtf/dtoa/diy-fp.cc

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-#include "sky/engine/config.h"
 
 #include "diy-fp.h"
 #include "sky/engine/wtf/dtoa/utils.h"
 
 namespace WTF {
 
 namespace double_conversion {
 
     void DiyFp::Multiply(const DiyFp& other) {
         // Simply "emulates" a 128 bit multiplication.
@@ skipping 14 matching lines @@
         // Halfway cases will be round up.
         tmp += 1U << 31;
         uint64_t result_f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32);
         e_ += other.e_ + 64;
         f_ = result_f;
     }
 
 }  // namespace double_conversion
 
 } // namespace WTF