Remove security definer on explain_statement function

[BF-2328]

Makefile

@@ -1,5 +1,5 @@
-short_ver = 1.1.9
-last_ver = 1.1.8
+short_ver = 1.1.10
+last_ver = 1.1.9
 long_ver = $(shell git describe --long 2>/dev/null || echo $(short_ver)-0-unknown-g`git describe --always`)
 generated = aiven_extras.control \
 			sql/aiven_extras--$(short_ver).sql \

sql/aiven_extras--1.1.8--1.1.9.sql

@@ -0,0 +1 @@
+-- NOOP

sql/aiven_extras.sql

@@ -546,12 +546,6 @@ CREATE FUNCTION aiven_extras.explain_statement(
 RETURNS SETOF JSON
 RETURNS NULL ON NULL INPUT
 LANGUAGE plpgsql
--- This is needed because otherwise the executing user would need to have the
--- SELECT privilege on all tables that are part of the plan.
-SECURITY DEFINER
--- We don't want to force users to change statements (e.g. schema-prefix all
--- tables in the query), so this intentionally does not specifiy a search_path.
--- Still, this will not help with users having custom search paths.
 AS $$
 DECLARE
     curs REFCURSOR;