pipeline: remove sources server

All sources are now pre-fetched before any pipeline and thus any
stage is being built. Additionally, in the version 1 foramt, all
stages that were using source are converted to use inputs when
the manifest is loaded. Thus, nothing should use `source.get`
and thus the sources API (`SourcesServer`) anymore.

osbuild/pipeline.py

@@ -9,7 +9,6 @@ from .api import API
 from . import buildroot
 from . import objectstore
 from . import remoteloop
-from . import sources
 from .inputs import Input
 from .sources import Source
 from .util import osrelease
@@ -104,12 +103,6 @@ class Stage:
             api = API(args, monitor)
             build_root.register_api(api)
 
-            src = sources.SourcesServer(libdir,
-                                        self.sources,
-                                        os.path.join(store.store, "sources"),
-                                        sources_output)
-            build_root.register_api(src)
-
             rls = remoteloop.LoopServer()
             build_root.register_api(rls)