Revert "[SPARK-10300] [BUILD] [TESTS] Add support for test tags in run-tests.py."

core/pom.xml

dev/run-tests.py

dev/sparktestsupport/modules.py

external/flume/pom.xml

external/kafka/pom.xml

external/mqtt/pom.xml

external/twitter/pom.xml

external/zeromq/pom.xml

extras/java8-tests/pom.xml

extras/kinesis-asl/pom.xml

launcher/pom.xml

mllib/pom.xml

network/common/pom.xml

network/shuffle/pom.xml

pom.xml

project/SparkBuild.scala

sql/core/pom.xml

...che/spark/sql/hive/execution/HiveCompatibilitySuite.scala

sql/hive/pom.xml

...test/java/org/apache/spark/sql/hive/ExtendedHiveTest.java