Update .travis.yml

Author: Luc

.travis.yml

@@ -26,7 +26,7 @@ before_script:
   - sed -i "s/build.lwip_include=lwip/build.lwip_include=lwip2/g" ./platform.txt
   - sed -i "s/build.lwip_flags=-DLWIP_OPEN_SRC/build.lwip_flags=-DLWIP_OPEN_SRC -DTCP_MSS=536 -DLWIP_FEATURES=1 -DLWIP_IPV6=0/g" ./platform.txt
   - sed -i "s/generic.build.f_cpu=80000000L/generic.build.f_cpu=160000000L/g" ./boards.txt
-  - rm -fr ./libraries/ESP8266mDNS/src/LEAmDNS.cpp
+  #- rm -fr ./libraries/ESP8266mDNS/src/LEAmDNS.cpp
   - cd $HOME/arduino_ide/hardware
   - mkdir esp32
   - cd esp32