message: Drop unused GIT_COMMIT_DATE macro
diff: @@ -25,11 +25,7 @@ const std::string CLIENT_NAME("Satoshi");
  // - "// No build information available", if proper git information is not available
  #endif
  -//! git will put "#define GIT_ARCHIVE 1" on the next line inside archives. $Format:%n#define GIT_ARCHIVE 1$
  -#ifdef GIT_ARCHIVE
  -#define GIT_COMMIT_ID "$Format:%H$"
  -#define GIT_COMMIT_DATE "$Format:%cD$"
  -#endif
  +//! git will put "#define GIT_COMMIT_ID ..." on the next line inside archives. $Format:%n#define GIT_COMMIT_ID "%H"$
  #ifdef BUILD_GIT_TAG
  #define BUILD_DESC BUILD_GIT_TAG
  