logger: move SDLOG_UTC_OFFSET param definition into logger module

It's still used in sdlog2, but once we'll depricate/remove sdlog2, we will
not remove this parameter as well.

src/modules/sdlog2/params.c

@@ -77,24 +77,6 @@ PARAM_DEFINE_INT32(SDLOG_EXT, -1);
  */
 PARAM_DEFINE_INT32(SDLOG_GPSTIME, 1);
 
-/**
- * UTC offset (unit: min)
- *
- * the difference in hours and minutes from Coordinated 
- * Universal Time (UTC) for a your place and date.
- *
- * for example, In case of South Korea(UTC+09:00), 
- * UTC offset is 540 min (9*60)
- *
- * refer to https://en.wikipedia.org/wiki/List_of_UTC_time_offsets
- *
- * @unit min
- * @min -1000
- * @max  1000
- * @group SD Logging
- */
-PARAM_DEFINE_INT32(SDLOG_UTC_OFFSET, 0);
-
 /**
  * Give logging app higher thread priority to avoid data loss.
  * This is used for gathering replay logs for the ekf2 module.