qa/distros: removed ubuntu 20.04 from supported distros

Signed-off-by: Casey Bodley <cbodley@redhat.com>

diff --git a/qa/distros/supported-random-distro$/ubuntu_20.04.yaml b/qa/distros/supported-random-distro$/ubuntu_20.04.yaml
deleted file mode 120000 (symlink)
index 75d907e..0000000
--- a/qa/distros/supported-random-distro$/ubuntu_20.04.yaml
+++ /dev/null
@@ -1 +0,0 @@
-../all/ubuntu_20.04.yaml
\ No newline at end of file

diff --git a/qa/distros/supported/ubuntu_20.04.yaml b/qa/distros/supported/ubuntu_20.04.yaml
deleted file mode 120000 (symlink)
index 75d907e..0000000
--- a/qa/distros/supported/ubuntu_20.04.yaml
+++ /dev/null
@@ -1 +0,0 @@
-../all/ubuntu_20.04.yaml
\ No newline at end of file