drop [test,server] extras from travis and tox.ini

.travis.yml

@@ -11,7 +11,7 @@ jobs:
       install:
         - pip install git+https://github.com/PyCQA/pylint.git
         - pip install mypy
-        - pip install -e .[test,server]
+        - pip install -e .
       script:
         - pylint --rcfile=setup.cfg torba
         - mypy --ignore-missing-imports torba

tox.ini

@@ -9,7 +9,6 @@ TESTTYPE =
 
 [testenv]
 deps = coverage
-extras = test,server
 changedir = {toxinidir}/tests
 setenv =
   integration: TORBA_LEDGER={envname}