Delete User View named the same as system view
Making a guess with no information but is the name in sys.objects INFORMATION_SCHEMA.TABLE_CONSTRAINTS?

Try running this:

SELECT object_schema_name(object_id) AS SchemaName, name 
FROM sys.all_objects
WHERE name like '%TABLE_CONSTRAINTS'


I'm guessing you get something like this:

SchemaName          Name
------------------  ------------------------------------
INFORMATION_SCHEMA  TABLE_CONSTRAINTS
dbo                 INFORMATION_SCHEMA.TABLE_CONSTRAINTS


First confirm that the second entry is actually a view then run the following:

DROP VIEW [dbo].[INFORMATION_SCHEMA.TABLE_CONSTRAINTS]




Please run the following query and post a screenshot of the results in your question.

SELECT object_id, schema_id, object_schema_name(object_id) AS SchemaName, name, type
FROM sys.all_objects
WHERE name like '%TABLE_CONSTRAINTS'