kde/kclock: disable qmlplugindump for armv7
qmlplugindump is failing when it runs with qemu user mode emulation for armv7 on builds.sr.ht. Disable it to unblock our binary repository.
The information retrieved by qmlplugindump is purely for packager knowledge and does not affect the runtime of kclock.
- Related: !9 (merged)
- Fixes: build.postmarketos.org#74 (closed)
Important fix, merging as soon as CI passes.