[Fix][ROCm] Remove unused variables to fix build error on GFX11/12 (#19891)

Signed-off-by: Hosang Yoon <hosang.yoon@amd.com>

Author: hyoon1

csrc/rocm/attention.cu

@@ -1598,7 +1598,6 @@ __launch_bounds__(NUM_THREADS, 3) void paged_attention_ll4mi_QKV_mfma16_kernel(
   const int warpid = threadIdx.x / WARP_SIZE;
   const int laneid = threadIdx.x % WARP_SIZE;
   const int lane2id = laneid % 2;
-  const int lane4id = laneid % 4;
   const int lane16id = laneid % 16;
   const int rowid = laneid / 16;
 
@@ -1745,7 +1744,6 @@ __launch_bounds__(NUM_THREADS, 3) void paged_attention_ll4mi_QKV_mfma16_kernel(
     const cache_t* k_ptr2 = k_ptr + kblock_number * kv_block_stride;
     const int klocal_token_idx =
         TOKENS_PER_WARP * warpid + token_depth * 16 + lane16id;
-    const int kglobal_token_idx = partition_start_token_idx + klocal_token_idx;
     const int kphysical_block_offset = klocal_token_idx % BLOCK_SIZE;
     const cache_t* k_ptr3 = k_ptr2 + kphysical_block_offset * KX;
 
@@ -2368,7 +2366,6 @@ __launch_bounds__(NUM_THREADS, 3) void paged_attention_ll4mi_QKV_mfma16_kernel(
   const int warpid = threadIdx.x / WARP_SIZE;
   const int laneid = threadIdx.x % WARP_SIZE;
   const int lane2id = laneid % 2;
-  const int lane4id = laneid % 4;
   const int lane16id = laneid % 16;
   const int rowid = laneid / 16;
 
@@ -2514,7 +2511,6 @@ __launch_bounds__(NUM_THREADS, 3) void paged_attention_ll4mi_QKV_mfma16_kernel(
     const cache_t* k_ptr2 = k_ptr + kblock_number * kv_block_stride;
     const int klocal_token_idx =
         TOKENS_PER_WARP * warpid + token_depth * 16 + lane16id;
-    const int kglobal_token_idx = partition_start_token_idx + klocal_token_idx;
     const int kphysical_block_offset = klocal_token_idx % BLOCK_SIZE;
     const cache_t* k_ptr3 = k_ptr2 + kphysical_block_offset * KX;