Issue #2458045 by webflo: Remove calls to core/vendor/autoload.php

autoload.php

core/includes/install.core.inc

core/modules/simpletest/src/InstallerTestBase.php

core/modules/simpletest/src/KernelTestBase.php

core/modules/simpletest/src/WebTestBase.php

...odules/system/src/Tests/DrupalKernel/DrupalKernelTest.php

...s/system/src/Tests/System/IgnoreReplicaSubscriberTest.php

core/scripts/migrate-dump-d6.sh

core/scripts/password-hash.sh

core/scripts/rebuild_token_calculator.sh

core/scripts/run-tests.sh

core/tests/bootstrap.php