remove mosquitto-1.6.3 code

guowenxue

2019-06-26 ef5ca324584d18c08b641bee8c95f1778e97c71b

 ch7_library/test/makefile

@@ -16,5 +16,3 @@
run:
   export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:LIBPATH
   ./${APPNAME}