diff --git a/Makefile b/Makefile
index b293fc1..4c200bc 100644
--- a/Makefile
+++ b/Makefile
@@ -103,5 +103,5 @@ clean_old_version:
 # source instead; a version file still under active development can be
 # linted directly, e.g.
 # `.vendor/linter/sql/bin/sql-lint sql/cat_tools--0.3.0.sql.in`.
-LINT_TARGETS = sql/cat_tools.sql.in sql/omit_column.sql test/
+LINT_TARGETS = sql/cat_tools.sql.in test/
 include lint.mk
diff --git a/sql/omit_column.sql b/sql/omit_column.sql
deleted file mode 100644
index 1d95832..0000000
--- a/sql/omit_column.sql
+++ /dev/null
@@ -1,16 +0,0 @@
-CREATE FUNCTION :s.omit_column(
-  rel text
-  , omit name[] DEFAULT array['oid']
-) RETURNS text LANGUAGE sql IMMUTABLE AS $body$
-SELECT array_to_string(array(
-    SELECT attname
-      FROM pg_attribute a
-      WHERE attrelid = rel::regclass
-        AND NOT attisdropped
-        AND attnum >= 0
-        AND attname != ANY( omit )
-      ORDER BY attnum
-    )
-  , ', '
-)
-$body$;