openqa/worker: drop the whole 'no-ffmpeg-on-aarch64' thing

it never worked anyway (ffmpeg always showed up, *somehow*) and
on the new workers it doesn't seem to be an issue.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

roles/openqa/worker/tasks/main.yml

@@ -108,12 +108,10 @@
   user: name=_openqa-worker groups=geekotest append=yes
   when: "openqa_static_uid is defined"
 
-- name: Install ffmpeg-free (not on aarch64)
+- name: Install ffmpeg-free
   ansible.builtin.package: name=ffmpeg-free state=present
   tags:
   - packages
-  when: "ansible_architecture is defined and ansible_architecture != 'aarch64'"
-
 
 - name: Install UEFI firmware package (x86_64 only)
   ansible.builtin.package: name=edk2-ovmf state=present
@@ -127,17 +125,6 @@
   - packages
   when: "ansible_architecture is defined and ansible_architecture == 'aarch64'"
 
-# Encoding with ffmpeg gives us better videos, but it seems like it
-# doesn't work well on aarch64, it overwhelms the CPU and makes tests
-# often fail
-- name: Block ffmpeg-free in dnf config (aarch64 only)
-  ini_file:
-    path: /etc/dnf/dnf.conf
-    section: main
-    option: excludepkgs
-    value: ffmpeg-free
-  when: "ansible_architecture is defined and ansible_architecture == 'aarch64'"
-
 - name: Install rng-tools (if specified by openqa_rngd var)
   ansible.builtin.package: name=rng-tools state=present
   tags: