Closes GH-0015 oozie client shell script has an invalid/not-needed variable
Closes GH-0015 oozie client shell script has an invalid/not-needed variable

Removing invalid $EXECCLASS variable.

cloudera/oozie,vmanoria/oozie,vmanoria/oozie,cloudera/oozie,vmanoria/oozie,yahoo/oozie,yahoo/oozie,vmanoria/oozie,cloudera/oozie,yahoo/oozie