Use plpython version of CDB_QueryStatements

test/support/sql/_CDB_QueryStatements.sql

@@ -1,16 +0,0 @@
--- DUMMY IMPLEMENTATION
--- Ref: https://github.com/CartoDB/cartodb-postgresql/blob/master/scripts-available/CDB_QueryStatements.sql
--- Originally implemented in plpython for performance reasons
-
--- Return an array of statements found in the given query text
---
--- Regexp curtesy of Hubert Lubaczewski (depesz)
---
-CREATE OR REPLACE FUNCTION CDB_QueryStatements(query text)
-RETURNS SETOF TEXT AS $$
-  with matches as (
-    select regexp_matches($1, $regexp$((?:[^'"$;]+|"[^"]*"|'[^']*'|(\$[^$]*\$).*?\2)+)$regexp$, 'g') as m
-  )
-  select btrim(m[1]) from matches
-$$
-LANGUAGE SQL IMMUTABLE STRICT;