Removed spark-executor since we are now launching slaves from SPARK_HOME.
Removed spark-executor since we are now launching slaves from
SPARK_HOME.

sameeragarwal/blinkdb,sjyk/sampleclean,lzshlzsh/shark,mattyb149/blinkdb,amplab/shark,alabid/blinkdb,sameeragarwal/blinkdb,mapr/shark,sameeragarwal/blinkdb_dev,lzshlzsh/shark,mattyb149/blinkdb,vax11780/shark,alabid/blinkdb,mattyb149/blinkdb,mapr/shark,mapr/shark,sjyk/sampleclean,amplab/shark,vax11780/shark,vax11780/shark,alabid/blinkdb,sameeragarwal/blinkdb_dev,sjyk/sampleclean,lzshlzsh/shark,amplab/shark,sameeragarwal/blinkdb_dev,sameeragarwal/blinkdb