Remove spc plugin

Replaced by gme plugin. Fixes #467
6 jobs for remove-spc-plugin in 31 minutes and 48 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Preparation
passed #64759
gst indent

00:00:28

passed #64758
manifest

00:00:19

 
  Build
passed #64760
build fedora x86_64

00:02:57

 
  Test
passed #64761
check fedora

00:16:13

 
  Full Builds
passed #64762
build android arm64 api28

00:02:19

passed #64763
build cerbero fedora x86_64

00:09:31