Databricks remove unneeded files and fix build to not fail on rm when…

… file missing (NVIDIA#451)

* remove unneeded files and use rm -rf

* Fix scalastyle for databricks shim

Co-authored-by: Thomas Graves <tgraves@nvidia.com>

jenkins/Jenkinsfile.databricksnightly

@@ -76,7 +76,7 @@ pipeline {
             steps {
                 script {
                     sshagent(credentials : ['svcngcc_pubpriv']) {
-                        sh "rm spark-rapids-ci.tgz"
+                        sh "rm -rf spark-rapids-ci.tgz"
                         sh "tar -zcvf spark-rapids-ci.tgz *"
                         sh "python3.6 ./jenkins/databricks/run-tests.py -c $CLUSTER_ID -z ./spark-rapids-ci.tgz -t $DATABRICKS_TOKEN -p /home/svcngcc/.ssh/id_rsa -l ./jenkins/databricks/build.sh -j $CI_RAPIDS_JAR -b $DATABRICKS_VERSION -k $SPARK_VERSION -a $SCALA_VERSION -f $CUDF_VERSION -u $CUDA_VERSION -m $CI_CUDF_JAR"
                         sh "./jenkins/databricks/deploy.sh"

shims/spark300db/src/main/scala/com/nvidia/spark/rapids/shims/spark300db/Spark300dbShims.scala

@@ -70,7 +70,7 @@ class Spark300dbShims extends Spark300Shims {
 
   override def getExecs: Map[Class[_ <: SparkPlan], ExecRule[_ <: SparkPlan]] = {
     Seq(
-     GpuOverrides.exec[FileSourceScanExec](
+      GpuOverrides.exec[FileSourceScanExec](
         "Reading data from files, often from Hive tables",
         (fsse, conf, p, r) => new SparkPlanMeta[FileSourceScanExec](fsse, conf, p, r) {
           // partition filters and data filters are not run on the GPU
@@ -104,7 +104,7 @@ class Spark300dbShims extends Spark300Shims {
         (join, conf, p, r) => new GpuBroadcastHashJoinMeta(join, conf, p, r)),
       GpuOverrides.exec[ShuffledHashJoinExec](
         "Implementation of join using hashed shuffled data",
-        (join, conf, p, r) => new GpuShuffledHashJoinMeta(join, conf, p, r)),
+        (join, conf, p, r) => new GpuShuffledHashJoinMeta(join, conf, p, r))
     ).map(r => (r.getClassFor.asSubclass(classOf[SparkPlan]), r)).toMap
   }