remove mingfeima mkldnn reference from README, as no longer necessary (…

…pytorch#14975)

Summary: we now get mkldnn automatically from third_party/ideep

Differential Revision: D13396480

Pulled By: soumith

fbshipit-source-id: 20f819ba4b78cbe9c7d0baeab1c575669cbf6c20

README.md

@@ -162,7 +162,6 @@ export CMAKE_PREFIX_PATH="$(dirname $(which conda))/../" # [anaconda root direct
 
 # Install basic dependencies
 conda install numpy pyyaml mkl mkl-include setuptools cmake cffi typing
-conda install -c mingfeima mkldnn
 
 # Add LAPACK support for the GPU
 conda install -c pytorch magma-cuda92 # or [magma-cuda80 | magma-cuda91] depending on your cuda version