Remove patch no longer applicable.

cmake/mkldnn.patch

@@ -28,16 +28,3 @@ index f10feb20..05f47961 100644
  set_property(TARGET ${LIB_NAME} PROPERTY PUBLIC_HEADER ${HEADERS})
  
  target_include_directories(${LIB_NAME} PUBLIC
-diff --git a/src/cpu/jit_avx512_common_conv_kernel.cpp b/src/cpu/jit_avx512_common_conv_kernel.cpp
-index 1bb98fa43..b8b54401f 100644
---- a/src/cpu/jit_avx512_common_conv_kernel.cpp
-+++ b/src/cpu/jit_avx512_common_conv_kernel.cpp
-@@ -3055,7 +3055,7 @@ void jit_avx512_common_conv_bwd_weights_kernel_f32::bias_kernel_3d() {
- void jit_avx512_common_conv_bwd_weights_kernel_f32
-     ::compute_oh_loop_common()
- {
--    assert(jcp.harness == harness_mb_reduction);
-+    assert(one_of(jcp.harness, harness_mb_reduction, harness_3d_reduction));
-     int b_pad = jcp.b_pad;
-     int t_pad = jcp.t_pad;
-     bool is_dilated = jcp.dilate_h != 0;