Delete duplicate installation of patchelf.

PiperOrigin-RevId: 310388388
Change-Id: If0be9f1f03a4004b593fa79dec5860c03d83cecc
diff --git a/tensorflow/tools/ci_build/Dockerfile.rbe.cuda10.1-cudnn7-ubuntu16.04-manylinux2010-multipython b/tensorflow/tools/ci_build/Dockerfile.rbe.cuda10.1-cudnn7-ubuntu16.04-manylinux2010-multipython
index 54bb4b3..353d946 100644
--- a/tensorflow/tools/ci_build/Dockerfile.rbe.cuda10.1-cudnn7-ubuntu16.04-manylinux2010-multipython
+++ b/tensorflow/tools/ci_build/Dockerfile.rbe.cuda10.1-cudnn7-ubuntu16.04-manylinux2010-multipython
@@ -17,7 +17,6 @@
       flex \
       g++ \
       make \
-      patchelf \
       rpm2cpio \
       unar \
       wget \