Simplify the testing directory

Author: baibaichen

backends-clickhouse/src/test/scala/org/apache/gluten/utils/UTSystemParameters.scala

@@ -34,29 +34,12 @@ object UTSystemParameters {
       UTSystemParameters.TEST_DATA_DISK_OUTPUT_KEY,
       UTSystemParameters.TEST_DATA_DISK_OUTPUT_DEFAULT_VALUE)
   }
-
-  private val TPCDS_DATA_PATH_KEY = "tpcds.data.path"
-  private val TPCDS_DATA_DECIMAL_PATH_KEY = "tpcds.data.decimal.path"
   private val TPCDS_RELATIVE_DATA_PATH = "tpcds-data-sf1"
   private val TPCDS_DECIMAL_RELATIVE_DATA_PATH = "tpcds-data-sf1-decimal"
 
-  def tpcdsDataPath: String = {
-    val result = System.getProperty(UTSystemParameters.TPCDS_DATA_PATH_KEY, null)
-    if (result == null) {
-      s"$testDataPath/$TPCDS_RELATIVE_DATA_PATH"
-    } else {
-      result
-    }
-  }
+  def tpcdsDataPath: String = s"$testDataPath/$TPCDS_RELATIVE_DATA_PATH"
 
-  def tpcdsDecimalDataPath: String = {
-    val result = System.getProperty(UTSystemParameters.TPCDS_DATA_DECIMAL_PATH_KEY, null)
-    if (result == null) {
-      s"$testDataPath/$TPCDS_DECIMAL_RELATIVE_DATA_PATH"
-    } else {
-      result
-    }
-  }
+  def tpcdsDecimalDataPath: String = s"$testDataPath/$TPCDS_DECIMAL_RELATIVE_DATA_PATH"
 
   private val TEST_MERGETREE_ON_OBJECT_STORAGE = "gluten.ch.test.mergetree.object.storage"
   private val TEST_MERGETREE_ON_OBJECT_STORAGE_DEFAULT_VALUE = "true"