Update package_managers.sh

scripts/lib/package_managers.sh

diff --git a/scripts/lib/package_managers.sh b/scripts/lib/package_managers.sh
index 188d143..267479e 100755
--- a/scripts/lib/package_managers.sh
+++ b/scripts/lib/package_managers.sh
@@ -21,7 +21,7 @@
 gem_install() {
   gem_update
   gem install "$@" --no-document --quiet
-  gem uninstall -i /Users/kbuilder/.rvm/rubies/ruby-2.5.1/lib/ruby/gems/2.5.0 rubygems-bundler
+  gem uninstall rubygems-bundler
 }
 
 brew_update() {