Fixed #30155 -- Dropped support for PostgreSQL 9.4 and PostGIS 2.1.

1 files changed, 1 insertions, 9 deletions

diff --git a/django/db/backends/postgresql/features.py b/django/db/backends/postgresql/features.py
index af3cde88b9..907ba136fb 100644
--- a/django/db/backends/postgresql/features.py
+++ b/django/db/backends/postgresql/features.py
@@ -16,6 +16,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     has_select_for_update = True
     has_select_for_update_nowait = True
     has_select_for_update_of = True
+    has_select_for_update_skip_locked = True
     can_release_savepoints = True
     supports_tablespaces = True
     supports_transactions = True
@@ -56,10 +57,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     validates_explain_options = False  # A query will error on invalid options.
 
     @cached_property
-    def is_postgresql_9_5(self):
-        return self.connection.pg_version >= 90500
-
-    @cached_property
     def is_postgresql_9_6(self):
         return self.connection.pg_version >= 90600
 
@@ -67,11 +64,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     def is_postgresql_10(self):
         return self.connection.pg_version >= 100000
 
-    has_select_for_update_skip_locked = property(operator.attrgetter('is_postgresql_9_5'))
-    has_brin_index_support = property(operator.attrgetter('is_postgresql_9_5'))
-    has_jsonb_agg = property(operator.attrgetter('is_postgresql_9_5'))
     has_brin_autosummarize = property(operator.attrgetter('is_postgresql_10'))
-    has_gin_pending_list_limit = property(operator.attrgetter('is_postgresql_9_5'))
-    supports_ignore_conflicts = property(operator.attrgetter('is_postgresql_9_5'))
     has_phraseto_tsquery = property(operator.attrgetter('is_postgresql_9_6'))
     supports_table_partitions = property(operator.attrgetter('is_postgresql_10'))