Disable parallel builds in Sublime, as it hides compile errors

Firmware.sublime-project

@@ -41,7 +41,7 @@
 			"name": "PX4: make all",
 			"working_dir": "${project_path}",
 			"file_regex": "^(..[^:]*):([0-9]+):?([0-9]+)?:? (.*)$",
-			"cmd": ["make -j8"],
+			"cmd": ["make"],
 			"shell": true
 		},
 		{