remove OP_LIB from op_abi (deepmodeling#2150)

These files have been compiled in libdeepmd.so, so they don't need to
compile again.

source/op/CMakeLists.txt

@@ -1,7 +1,5 @@
 # libop
 
-set(OP_LIB ${PROJECT_SOURCE_DIR}/lib/src/SimulationRegion.cpp ${PROJECT_SOURCE_DIR}/lib/src/neighbor_list.cc)
-
 file(GLOB OP_SRC prod_env_mat_multi_device_nvnmd.cc map_nvnmd.cc matmul_nvnmd.cc quantize_nvnmd.cc tanh2_nvnmd.cc tanh4_nvnmd.cc custom_op.cc prod_force.cc prod_virial.cc descrpt.cc descrpt_se_a_ef.cc descrpt_se_a_ef.cc descrpt_se_a_ef_para.cc descrpt_se_a_ef_vert.cc pair_tab.cc prod_force_multi_device.cc prod_virial_multi_device.cc soft_min.cc soft_min_force.cc soft_min_virial.cc ewald_recp.cc gelu_multi_device.cc map_aparam.cc neighbor_stat.cc unaggregated_grad.cc tabulate_multi_device.cc prod_env_mat_multi_device.cc)
 file(GLOB OP_GRADS_SRC custom_op.cc prod_force_grad.cc prod_force_grad_multi_device.cc prod_virial_grad.cc prod_virial_grad_multi_device.cc soft_min_force_grad.cc soft_min_virial_grad.cc )
 file(GLOB OP_PY *.py)
@@ -20,7 +18,7 @@ if (BUILD_CPP_IF)
 endif (BUILD_CPP_IF)
 
 if (BUILD_PY_IF)
-  add_library(op_abi MODULE ${OP_SRC} ${OP_LIB} ${OP_REMAPPER_SRC})
+  add_library(op_abi MODULE ${OP_SRC} ${OP_REMAPPER_SRC})
   add_library(op_grads MODULE ${OP_GRADS_SRC})
 
   # link: libdeepmd libtensorflow_framework