pss::sendMsg() produces 11k log lines and causes Travis error

[frncmx]

In pss.go the sendMsg() function produces thousands of log lines in tests when !isPssEnabled.

Travis went into error with "The job exceeded the maximum log length, and has been terminated." As the test run produced 30k log lines and from that 11k was from the above function.

The log line: "peer doesn't have matching pss capabilities, skipping"

Would it be OK to remove the log line? or could reduce the number somehow?

Log sample

�[31mERROR�[0m[02-05|09:56:22.419] peer doesn't have matching pss capabilities, skipping �[31mpeer�[0m=0x3c98a085c2b863a6c1183eda608b9cce417d8824efbbe50104af71d6711e3a1c �[31mcaps�[0m=[nopss/1] �[31mcaller�[0m=pss.go:929
�[31mERROR�[0m[02-05|09:56:22.419] peer doesn't have matching pss capabilities, skipping �[31mpeer�[0m=0x045df729814fa5e678fef515eb9b3140c7c903b45e30b6568b510c68106e8ee7 �[31mcaps�[0m=[pss/0]   �[31mcaller�[0m=pss.go:929
�[31mERROR�[0m[02-05|09:56:22.419] peer doesn't have matching pss capabilities, skipping �[31mpeer�[0m=0x3c98a085c2b863a6c1183eda608b9cce417d8824efbbe50104af71d6711e3a1c �[31mcaps�[0m=[nopss/1] �[31mcaller�[0m=pss.go:929
�[31mERROR�[0m[02-05|09:56:22.420] peer doesn't have matching pss capabilities, skipping �[31mpeer�[0m=0x045df729814fa5e678fef515eb9b3140c7c903b45e30b6568b510c68106e8ee7 �[31mcaps�[0m=[pss/0]   �[31mcaller�[0m=pss.go:929