Logging to verbose [stdout] on Eap6

Issue

In our server.log file we can see tons of entries like these:

20:18:00,246 INFO  [stdout] (EJB default - 3) 0160: 2C 84 B5 2A 0D E9 7A 4D   CC D3 D4 31 BB 43 9D FD  ,..*..zM...1.C..

20:18:00,246 INFO  [stdout] (EJB default - 3) 0170: DC 22 6D 7D 7A 69 7E 0A   6A 93 EB 06 CE B5 AA DE  ."m.zi..j.......

20:18:00,246 INFO  [stdout] (EJB default - 3) 0180: 0C 34 E5 FB C8 81 23 8B   E0 BF 21 6D D3 0E 3C D5  .4....#...!m..<.

20:18:00,246 INFO  [stdout] (EJB default - 3) 0190: 32 EA A6 90 1A 5F 28 F3   21 37 26 B3 C2 E6 53 58  2...._(.!7&...SX

20:18:00,246 INFO  [stdout] (EJB default - 3) 01A0: A3 DB 1F 23 09 DD BF 91   89 4E 7A FF 82 EB 1F 5A  ...#.....Nz....Z

20:18:00,246 INFO  [stdout] (EJB default - 3) 01B0: C6 05 D7 10 69 AD 61 EB   B0 A0 FF 57 AA 11 4B E9  ....i.a....W..K.

20:18:00,246 INFO  [stdout] (EJB default - 3) 01C0: 02 03 01 00 01 30 0D 06   09 2A 86 48 86 F7 0D 01  .....0...*.H....

How can we avoid this logging without setting the global log level to "WARN" (or anything higher than INFO)?