tests: Disable network-panel tests

Several UI elements has changed and disabled (temporarily).
So disable related tests
4 jobs for wip/purism/sadiq/ethernet-editor in 9 minutes and 10 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Package
passed #264361
librem5
package:deb-debian-buster

00:03:53

passed #264362
librem5:arm64
package:deb-debian-buster:arm64

00:08:00

 
  Test Package
passed #264363
librem5
autopkgtest-debian-buster-package

00:01:06

passed #264364
librem5
lintian-debian-buster-package

00:01:09