⚙️ ppn2ocr: Move pruning file groups into a function

ppn2ocr

@@ -78,6 +78,14 @@ def mime_type_for_format(format_):
     return mime_type
 
 
+def prune_file_grps(mets):
+    # XXX
+    # Delete PRESENTATION + LOCAL file groups
+    # (local file:/// or file:/ links, not handled well by "ocrd workspace")
+    remove_file_grp(mets, 'PRESENTATION')
+    remove_file_grp(mets, 'LOCAL')
+
+
 def make_workspace(ppn, workspace):
     # Make workspace directory
     os.mkdir(workspace)
@@ -85,11 +93,6 @@ def make_workspace(ppn, workspace):
 
     mets = oai_mets(ppn)
 
-    # XXX
-    # Delete PRESENTATION + LOCAL file groups
-    # (local file:/// or file:/ links, not handled well by "ocrd workspace")
-    remove_file_grp(mets, 'PRESENTATION')
-    remove_file_grp(mets, 'LOCAL')
 
 
     # Delete MAX file group - we assume that, if it exists, it is not as
@@ -125,6 +128,10 @@ def make_workspace(ppn, workspace):
 
     mets.find('//mets:fileSec', namespaces=XMLNS).append(file_grp_best)
 
+
+    prune_file_grps(mets)
+
+
     # Write mets.xml
     mets.write('mets.xml', pretty_print=True)