diff --git a/Makefile b/Makefile
index 275a7683..c5bc178d 100644
--- a/Makefile
+++ b/Makefile
@@ -144,26 +144,6 @@ safe-update:
 	tools/safe-update.py
 
 
-### Migrate Configuration from PURL.org
-#
-# Given an ontology ID (usually lower-case),
-# fetch and translate a PURL.org XML file
-# into a YAML configuration file.
-# This should be a one-time migration.
-# Do not overwrite existing config file.
-PURL_XML = https://purl.org/admin/purl/?target=&seealso=&maintainers=&explicitmaintainers=&tombstone=false&p_id=
-
-.PHONY: migrate-%
-migrate-%:
-	@test ! -s config/$*.yml \
-	|| (echo 'Refusing to overwrite config/$*.yml'; exit 1)
-	mkdir -p migrations
-	test -s migrations/$*.xml \
-	|| curl --fail -o migrations/$*.xml "$(PURL_XML)/obo/$**"
-	mkdir -p config
-	tools/migrate.py $* migrations/$*.xml config/$*.yml
-
-
 ### Code style and lint checks for python source files.
 #
 # Note that `|| true` is appended to force make to ignore the exit code in both cases
diff --git a/config/dpo.yml b/config/dpo.yml
index bd251a45..420ea64e 100644
--- a/config/dpo.yml
+++ b/config/dpo.yml
@@ -10,6 +10,3 @@ products:
 - dpo.owl: https://raw.githubusercontent.com/FlyBase/flybase-controlled-vocabulary/master/releases/dpo.owl
 
 term_browser: ontobee
-example_terms:
-
-entries:
diff --git a/config/xao.yml b/config/xao.yml
index 4698ef4f..a50314bb 100644
--- a/config/xao.yml
+++ b/config/xao.yml
@@ -8,7 +8,6 @@ products:
 - xao.obo: http://ontologies.berkeleybop.org/xao.obo
 
 term_browser: ontobee
-example_terms:
 
 entries:
 - prefix: /tracker/