Revert "Feature: use custom go in ci"

This reverts commit 31bb87855b.

.travis.yml

@@ -18,10 +18,7 @@ install:
 - cd ClashX/Resources
 - git clone -b gh-pages https://github.com/Dreamacro/clash-dashboard.git dashboard
 - cd ..
-- wget https://github.com/yichengchen/clashX/files/2871852/go.tar.gz
-- tar zxvf go.tar.gz
-- chmod +x go
-- ./go build -buildmode=c-archive
+- go build -buildmode=c-archive
 - cd $TRAVIS_BUILD_DIR
 script:
 - 'xcodebuild -workspace ClashX.xcworkspace -scheme "ClashX" build CODE_SIGN_IDENTITY="Developer
@@ -29,7 +26,7 @@ script:
 
 before_deploy:
 - gem install gym
-- fastlane gym -s ClashX
+- fastlane gym -s ClashX --disable_xcpretty
 - npm install --global create-dmg
 - create-dmg ClashX.app
 - mv ClashX*.dmg ClashX.dmg