[ci] removed temp brew hotfix and deprecated sudo option (#1951)

* removed brew hotfix and deprecated sudo option on Travis

* removed brew hotfix on Azure

.travis.yml

 language: cpp
-sudo: required
 dist: trusty
 
 git:
@@ -38,7 +37,6 @@ matrix:
 before_install:
   - test -n $CC  && unset CC
   - test -n $CXX && unset CXX
-  - export HOMEBREW_LOGS="$HOME/brew_logs"  # brew hotfix 
   - export HOME_DIRECTORY="$HOME"
   - export BUILD_DIRECTORY="$TRAVIS_BUILD_DIR"
   - if [[ $TRAVIS_OS_NAME == "osx" ]]; then

.vsts-ci.yml

@@ -107,7 +107,6 @@ jobs:
     inputs:
       updateConda: false
   - script: |
-      echo "##vso[task.setvariable variable=HOMEBREW_LOGS]$AGENT_HOMEDIRECTORY/brew_logs"
       echo "##vso[task.setvariable variable=HOME_DIRECTORY]$AGENT_HOMEDIRECTORY"
       echo "##vso[task.setvariable variable=BUILD_DIRECTORY]$BUILD_SOURCESDIRECTORY"
       echo "##vso[task.setvariable variable=OS_NAME]macos"