pkg/config: do NOT set StaticDir and VolumeDir

Let callers (i.e., Podman) decide which defaults to chose.  This way,
callers know when to override defaults (i.e., when the values are
empty).

Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

common/pkg/config/default.go

@@ -301,8 +301,6 @@ func defaultEngineConfig() (*EngineConfig, error) {
 
 	c.graphRoot = storeOpts.GraphRoot
 	c.ImageCopyTmpDir = getDefaultTmpDir()
-	c.StaticDir = filepath.Join(storeOpts.GraphRoot, "libpod")
-	c.VolumePath = filepath.Join(storeOpts.GraphRoot, "volumes")
 
 	c.VolumePluginTimeout = DefaultVolumePluginTimeout
 	c.CompressionFormat = "gzip"