Fix 1 Complexity, 7 Maintainability, 1 Performance issues in multiple files

[nathhB]

CodeFactor found multiple issues:

Complex Code

• [ ] nbnet.h

'reject' is defined but never used.

• [ ] net_drivers\webrtc\js\standalone\signaling_server.js:11

'_' is defined but never used.

• [ ] net_drivers\webrtc\js\api.js:110
• [ ] net_drivers\webrtc\js\api.js:44
• [ ] net_drivers\webrtc\js\standalone\signaling_client.js:75

'ev' is defined but never used.

• [ ] net_drivers\webrtc\js\standalone\signaling_client.js:21

Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.

• [ ] bin\travis\run_soak.sh:29

'err' is defined but never used.

• [ ] net_drivers\webrtc\js\game_client.js:46

'options' is assigned a value but never used.

• [ ] net_drivers\webrtc\js\logger.js:28