[Core] Remove evictor_v1 (vllm-project#9572)

Signed-off-by: Sumit Dubey <sumit.dubey2@ibm.com>

Author: KuntaiDu

vllm/core/block/prefix_caching_block.py

@@ -7,7 +7,7 @@
 from vllm.core.block.interfaces import Block, BlockAllocator, BlockId, Device
 from vllm.core.block.naive_block import (BlockPool, NaiveBlock,
                                          NaiveBlockAllocator)
-from vllm.core.evictor_v2 import EvictionPolicy, Evictor, make_evictor
+from vllm.core.evictor import EvictionPolicy, Evictor, make_evictor
 
 PrefixHash = int