Remove rpm's and git install

Author: ethanwee1

manywheel/Dockerfile_2_28

@@ -92,12 +92,7 @@ RUN yum install -y \
         glibc-langpack-en
 
 # ius-release package needs epel-release-7
-RUN yum install -y \
-    https://repo.ius.io/ius-release-el7.rpm \
-    https://ossci-linux.s3.amazonaws.com/epel-release-7-14.noarch.rpm
-#Stopped working as of 8/1 (due to CentOS EOL?)
-#    https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
-RUN yum swap -y git git236-core
+
 # git236+ would refuse to run git commands in repos owned by other users
 # Which causes version check to fail, as pytorch repo is bind-mounted into the image
 # Override this behaviour by treating every folder as safe