Revert "Move requirements into tests. (#35197)"

This reverts commit 4f6017dc16.

test/integration/targets/gem/tasks/main.yml

@@ -16,22 +16,6 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
-- include_vars: '{{ item }}'
-  with_first_found:
-    - files:
-        - '{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yml'
-        - '{{ ansible_distribution }}-{{ ansible_distribution_version }}.yml'
-        - '{{ ansible_os_family }}.yml'
-        - 'default.yml'
-      paths: '../vars'
-
-- name: install dependencies for test
-  package: name={{ package_item }} state=present
-  with_items: "{{ test_packages }}"
-  loop_control:
-    loop_var: package_item
-  when: ansible_distribution != "MacOSX"
-
 - name: remove a gem
   gem: name=gist state=absent