5 files changed, 3 insertions, 27 deletions
diff --git a/django/core/db/backends/ado_mssql.py b/django/core/db/backends/ado_mssql.py
index b6b61d4129..bb5b628aca 100644
--- a/django/core/db/backends/ado_mssql.py
+++ b/django/core/db/backends/ado_mssql.py
@@ -132,12 +132,6 @@ OPERATOR_MAPPING = {
     'endswith': 'LIKE %s',
     'istartswith': 'LIKE %s',
     'iendswith': 'LIKE %s',
-    'notcontains': 'NOT LIKE %s',
-    'notstartswith': 'NOT LIKE %s',
-    'notendswith': 'NOT LIKE %s',
-    'inotcontains': 'NOT LIKE %s',
-    'inotstartswith': 'NOT LIKE %s',
-    'inotendswith': 'NOT LIKE %s',
 }
 
 DATA_TYPES = {
diff --git a/django/core/db/backends/mysql.py b/django/core/db/backends/mysql.py
index 8f9bfd26b3..0e31af13fc 100644
--- a/django/core/db/backends/mysql.py
+++ b/django/core/db/backends/mysql.py
@@ -146,12 +146,6 @@ OPERATOR_MAPPING = {
     'endswith': 'LIKE BINARY %s',
     'istartswith': 'LIKE %s',
     'iendswith': 'LIKE %s',
-    'notcontains': 'NOT LIKE BINARY %s',
-    'notstartswith': 'NOT LIKE BINARY %s',
-    'notendswith': 'NOT LIKE BINARY %s',
-    'inotcontains': 'NOT LIKE %s',
-    'inotstartswith': 'NOT LIKE %s',
-    'inotendswith': 'NOT LIKE %s',
 }
 
 # This dictionary maps Field objects to their associated MySQL column
diff --git a/django/core/db/backends/postgresql.py b/django/core/db/backends/postgresql.py
index f62f7b3585..c650660ad8 100644
--- a/django/core/db/backends/postgresql.py
+++ b/django/core/db/backends/postgresql.py
@@ -151,12 +151,6 @@ OPERATOR_MAPPING = {
     'endswith': 'LIKE %s',
     'istartswith': 'ILIKE %s',
     'iendswith': 'ILIKE %s',
-    'notcontains': 'NOT LIKE %s',
-    'notstartswith': 'NOT LIKE %s',
-    'notendswith': 'NOT LIKE %s',
-    'inotcontains': 'NOT ILIKE %s',
-    'inotstartswith': 'NOT ILIKE %s',
-    'inotendswith': 'NOT ILIKE %s',
 }
 
 # This dictionary maps Field objects to their associated PostgreSQL column
diff --git a/django/core/db/backends/sqlite3.py b/django/core/db/backends/sqlite3.py
index 1ff74ea0e8..1a4a80d632 100644
--- a/django/core/db/backends/sqlite3.py
+++ b/django/core/db/backends/sqlite3.py
@@ -153,12 +153,6 @@ OPERATOR_MAPPING = {
     'endswith': "LIKE %s ESCAPE '\\'",
     'istartswith': "LIKE %s ESCAPE '\\'",
     'iendswith': "LIKE %s ESCAPE '\\'",
-    'notcontains': "NOT LIKE %s ESCAPE '\\'",
-    'notstartswith': "NOT LIKE %s ESCAPE '\\'",
-    'notendswith': "NOT LIKE %s ESCAPE '\\'",
-    'inotcontains': "NOT LIKE %s ESCAPE '\\'",
-    'inotstartswith': "NOT LIKE %s ESCAPE '\\'",
-    'inotendswith': "NOT LIKE %s ESCAPE '\\'",
 }
 
 # SQLite doesn't actually support most of these types, but it "does the right
diff --git a/django/core/meta/fields.py b/django/core/meta/fields.py
index 19f827c800..c45c7b6e02 100644
--- a/django/core/meta/fields.py
+++ b/django/core/meta/fields.py
@@ -181,13 +181,13 @@ class Field(object):
             return value
         elif lookup_type == 'year':
             return ['%s-01-01' % value, '%s-12-31' % value]
-        elif lookup_type in ('contains', 'icontains', 'notcontains', 'inotcontains'):
+        elif lookup_type in ('contains', 'icontains'):
             return ["%%%s%%" % prep_for_like_query(value)]
         elif lookup_type == 'iexact':
             return [prep_for_like_query(value)]
-        elif lookup_type in ('startswith', 'istartswith', 'notstartswith', 'inotstartswith'):
+        elif lookup_type in ('startswith', 'istartswith'):
             return ["%s%%" % prep_for_like_query(value)]
-        elif lookup_type in ('endswith', 'iendswith', 'notendswith', 'inotendswith'):
+        elif lookup_type in ('endswith', 'iendswith'):
             return ["%%%s" % prep_for_like_query(value)]
         elif lookup_type == 'isnull':
             return []