Cleanup .gitignore for pull request

Former-commit-id: 3652e7d [formerly 2cf4b3944c3f2df4a1157e8e16f2bb2f23a6ae68] [formerly bd939cf207cb44ef48715f46436f713859fcde87 [formerly 0a34cacac41fe76af91a17f8ea7be92a671c1224]]
Former-commit-id: fa9aad82f240fac65f61066887431d55bf36ac2f [formerly a77f9f35e306d6fa6ed3fce37dd04641074b0bc6]
Former-commit-id: 8a7ea572181431d974ea12c7f5a23f4704cbbfff

Author: urche0n-82

.gitignore

@@ -22,5 +22,3 @@ snapshot/serial-port-json-server_windows_amd64.zip
 src/github.com/gorilla/websocket/
 
 src/github.com/johnlauer/goserial/
-
-serial-port-json-server-osx.zip