issue/209: delete N assert

src/infiniop/elementwise/kunlun/elementwise_kunlun_kernel.h

@@ -54,6 +54,8 @@ __device__ void launchOp(
     size_t output_index,
     Args... args) {
 
+    static_assert(N == Op::num_inputs, "template N is not equal to Op::num_inputs!\n");
+
 #pragma unroll
     // Copy inputs to buf
     for (size_t i = 0; i < N; i++) {
@@ -87,9 +89,6 @@ __global__ void elementwiseKernel(
     const void *const *inputs,
     Args... args) {
 
-    // Only support 3 mode elementwise
-    static_assert(N < 4, "elementwise Kernel support mode < 4 calculate");
-
     int cid = core_id();
     int ncores = core_num();
     if (cid >= ncores) {