Merge pull request #28770 from staudenmeir/28750

[5.8] Simplify #28750

Author: taylorotwell

src/Illuminate/Database/Schema/Grammars/SqlServerGrammar.php

@@ -320,9 +320,8 @@ public function compileDisableForeignKeyConstraints()
     public function compileDropAllForeignKeys()
     {
         return "DECLARE @sql NVARCHAR(MAX) = N'';
-            SELECT @sql += 'ALTER TABLE ' + QUOTENAME(OBJECT_SCHEMA_NAME(parent_object_id))
-                + '.' + QUOTENAME(OBJECT_NAME(parent_object_id)) + 
-                ' DROP CONSTRAINT ' + QUOTENAME(name) + ';'
+            SELECT @sql += 'ALTER TABLE ' + QUOTENAME(OBJECT_NAME(parent_object_id)) 
+                + ' DROP CONSTRAINT ' + QUOTENAME(name) + ';'
             FROM sys.foreign_keys;
             
             EXEC sp_executesql @sql;";