run-basic-rails-application: Remove a logic installing upstream rails gem.

Remove a logic installing upstream rails gem which is executed if Rails RPM is
not installed. The logic is for CentOS Stream where Rails RPM may not be
installed.

However, as there is the tests/ruby repository for CentOS Stream,[1] we don't
have to manage CentOS Stream specific logic in Fedora tests/ruby repository.

[1] https://gitlab.com/redhat/centos-stream/tests/ruby

run-basic-rails-application/runtest.sh

@@ -32,10 +32,6 @@
 PACKAGES=${PACKAGES:-ruby rubygems rubypick}
 REQUIRES=${REQUIRES:-}
 RUBY=${RUBY:-ruby}
-RAILS=0
-bundle=""
-ARCH=$(uname -m)
-RAILSVER=""
 
 rlJournalStart
     rlPhaseStartSetup
@@ -44,20 +40,6 @@ rlJournalStart
         rlAssertBinaryOrigin "gem"
         rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
         rlRun "pushd $TmpDir"
-
-        # install rails and nokogiri from gem if not found in installation
-        if ! gem list "^rails *$" -i
-        then
-            # nokogiri gem installed with rails needs to use system libraries
-            # on arm and ppcle otherwise it fails with bundled libraries
-            if [ "x$ARCH" = "xaarch64" ] || [ "x$ARCH" = "xppc64le" ]
-            then
-                export NOKOGIRI_USE_SYSTEM_LIBRARIES=yes
-            fi
-            rlRun "gem install nokogiri $NOKOVER --no-document" 0 "Installing nokogiri $NOKOVER without documentation"
-            rlRun "gem install rails $RAILSVER --no-document" 0 "Installing rails $RAILSVER without documentation"
-            RAILS=1
-        fi
     rlPhaseEnd
 
     rlPhaseStartTest
@@ -74,7 +56,6 @@ rlJournalStart
 
     rlPhaseStartCleanup
         rlRun "popd; popd"
-        [ $RAILS == 1 ] && rlRun "gem uninstall rails nokogiri minitest -a -I -x" 0 "Removing rails and nokogiri gem"
         rlRun "rm -r $TmpDir" 0 "Removing tmp directory"
     rlPhaseEnd
 rlJournalPrintText