Remove pytest-faulthandler external plugin.

It is in the core as of pytest 5.0.0.

misc/requirements/requirements-tests.txt

@@ -27,7 +27,6 @@ pytest==5.0.0
 pytest-bdd==3.1.0
 pytest-benchmark==3.2.2
 pytest-cov==2.7.1
-pytest-faulthandler==1.6.0
 pytest-instafail==0.4.1
 pytest-mock==1.10.4
 pytest-qt==3.2.2

pytest.ini

@@ -1,6 +1,6 @@
 [pytest]
 log_level = NOTSET
-addopts = --strict -rfEw --faulthandler-timeout=90 --instafail --benchmark-columns=Min,Max,Median
+addopts = --strict -rfEw --instafail --benchmark-columns=Min,Max,Median
 testpaths = tests
 markers =
     gui: Tests using the GUI (e.g. spawning widgets)
@@ -70,3 +70,4 @@ qt_log_ignore =
     ^Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created\.
 xfail_strict = true
 filterwarnings = error
+faulthandler_timeout = 90