disablled isort from travis (#5082)

.travis.yml

@@ -49,9 +49,7 @@ matrix:
   - python: '3.6'
     env: TOXENV=pydocstyle
     stage: lint
-  - python: '3.6'
-    env: TOXENV=isort-check
-    stage: lint
+
 before_install:
     - if [[ -v MATRIX_TOXENV ]]; then export TOXENV=${TRAVIS_PYTHON_VERSION}-${MATRIX_TOXENV}; fi; env
     - |

tox.ini

@@ -8,7 +8,6 @@ envlist =
     apicheck
     configcheck
     pydocstyle
-    isort-check
     bandit
 
 [testenv]
@@ -24,9 +23,6 @@ deps=
 
     linkcheck,apicheck,configcheck: -r{toxinidir}/requirements/docs.txt
     flake8,flakeplus,pydocstyle: -r{toxinidir}/requirements/pkgutils.txt
-    isort-check: -r{toxinidir}/requirements/test-ci-default.txt
-    isort-check: isort>=4.3.4
-    isort-check: Sphinx==1.6.5
     bandit: bandit
 sitepackages = False
 recreate = False
@@ -59,7 +55,7 @@ basepython =
     3.5: python3.5
     3.6: python3.6
     pypy: pypy
-    flake8,apicheck,linkcheck,configcheck,pydocstyle,isort-check,bandit: python3.6
+    flake8,apicheck,linkcheck,configcheck,pydocstyle,bandit: python3.6
     flakeplus: python2.7
 usedevelop = True
 
@@ -93,5 +89,3 @@ commands =
 commands =
     pydocstyle {toxinidir}/celery
 
-[testenv:isort-check]
-commands = isort -j2 --project celery --diff --order-by-type -rc -c {toxinidir}/celery {toxinidir}/t