Revert "feat: Add Iceberg partition name generation utility (facebookincubator#15443)"

This reverts commit 51d4a94.

Alchemy-item: (ID = 885) Iceberg staging hub commit 3/15 - 112ce8a

Author: PingLiuPing

velox/connectors/hive/iceberg/CMakeLists.txt

@@ -15,7 +15,6 @@
 velox_add_library(
   velox_hive_iceberg_splitreader
   IcebergDataSink.cpp
-  IcebergPartitionPath.cpp
   IcebergSplit.cpp
   IcebergSplitReader.cpp
   PartitionSpec.cpp

velox/connectors/hive/iceberg/IcebergPartitionPath.cpp

@@ -60,7 +60,6 @@ if(NOT VELOX_DISABLE_GOOGLETEST)
   add_executable(
     velox_hive_iceberg_insert_test
     IcebergInsertTest.cpp
-    IcebergPartitionPathTest.cpp
     IcebergTestBase.cpp
     Main.cpp
     PartitionSpecTest.cpp