CI: Remove zybo, samus and samus_tpl from lab

These boards are no longer available in the lab, so drop them from the
CI configuration.

Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>

.gitlab-ci.yml

@@ -782,17 +782,6 @@ pcduino3_nano:
     ROLE: pcduino3_nano
   <<: *lab_dfn
 
-samus:
-  variables:
-    ROLE: samus
-  <<: *lab_dfn
-
-# chromebook_samus_tpl
-samus_tpl:
-  variables:
-    ROLE: samus_tpl
-  <<: *lab_dfn
-
 link:
   variables:
     ROLE: link
@@ -927,11 +916,6 @@ rpi5:
     ROLE: rpi5
   <<: *lab_dfn
 
-zybo:
-  variables:
-    ROLE: zybo
-  <<: *lab_dfn
-
 qemu-x86_64:
   variables:
     ROLE: qemu-x86_64