Merge #15328: travis: Revert "Run extended tests once daily"

fa6b7b9cf6 travis: Revert "Run extended tests once daily" (MarcoFalke)

Pull request description:

  Now that the extended tests are only pruning and dbcrash, both which are too long [1] to run on travis, we can revert this commit. All tests other than those two are still run for every travis pull request or cron run.

  [1] https://travis-ci.org/bitcoin/bitcoin/jobs/487615211#L2930

Tree-SHA512: dff293823336677380f6e804379125687869a4b547c968f0b6aae80daee1cbca2cfb845b63de7135f31fbe2383d8d7654694b6dc8a6a6b7d02d57ee8ff107527

.travis/test_06_script_b.sh

@@ -14,12 +14,8 @@ if [ "$RUN_UNIT_TESTS" = "true" ]; then
   END_FOLD
 fi
 
-if [ "$TRAVIS_EVENT_TYPE" = "cron" ]; then
-  extended="--extended --exclude feature_pruning"
-fi
-
 if [ "$RUN_FUNCTIONAL_TESTS" = "true" ]; then
   BEGIN_FOLD functional-tests
-  DOCKER_EXEC test/functional/test_runner.py --ci --combinedlogslen=4000 --coverage --quiet --failfast ${extended}
+  DOCKER_EXEC test/functional/test_runner.py --ci --combinedlogslen=4000 --coverage --quiet --failfast
   END_FOLD
 fi