[bug] keygen encryption error log

Seeing this error in a bifrost that failed to generate a keygen (likely failed tss). I think these error logs are fine, just don't need to log them.

{"level":"error","service":"bifrost","path":"/root/.thornode/localstate-.json","time":"2023-08-04T04:08:05Z","caller":"/app/bifrost/tss/encrypt_keyshares.go:62","message":"failed to open file"}
{"level":"error","service":"bifrost","module":"signer","error":"failed keyshare encrypt - cannot open key file: open /root/.thornode/localstate-.json: no such file or directory","time":"2023-08-04T04:08:05Z","caller":"/app/bifrost/signer/sign.go:405","message":"fail to encrypt keyshares"}