Prevent from warning message box in case of EUC-KR

Just remove below message

Errors occurred while converting ErrorCode.h with EUC-KR encoding.

WARNING: Continue to load this file using EUC-KR, malformed data will be
ignored.

Press "Cancel" to choose another encoding manually.
Prevent warning message during converting cp949 file

Just remove below message.

Errors occurred while converting your file with EUC-KR encoding.

WARNING: Continue to load this file using EUC-KR, malformed data will be
ignored.

Press "Cancel" to choose another encoding manually.
Revert "Prevent warning message during converting cp949 file"

This reverts commit 23be112ad73c73c73fee7de67d744e7efb22ab84.
Revert "Revert "Prevent warning message during converting cp949 file""

This reverts commit 2d7055f204f8324ba02641eb9e34b5db05da8cbc.
Merge pull request #41 from yoonian/master

Prevent warning message during converting cp949 file