Stop explicitly passing `nil` as the column to `type_cast`

So we can change the arity later.

activerecord/test/cases/adapters/sqlite3/quoting_test.rb

@@ -21,46 +21,46 @@ def test_type_cast_binary_encoding_without_logger
         end
 
         def test_type_cast_symbol
-          assert_equal 'foo', @conn.type_cast(:foo, nil)
+          assert_equal 'foo', @conn.type_cast(:foo)
         end
 
         def test_type_cast_date
           date = Date.today
           expected = @conn.quoted_date(date)
-          assert_equal expected, @conn.type_cast(date, nil)
+          assert_equal expected, @conn.type_cast(date)
         end
 
         def test_type_cast_time
           time = Time.now
           expected = @conn.quoted_date(time)
-          assert_equal expected, @conn.type_cast(time, nil)
+          assert_equal expected, @conn.type_cast(time)
         end
 
         def test_type_cast_numeric
-          assert_equal 10, @conn.type_cast(10, nil)
-          assert_equal 2.2, @conn.type_cast(2.2, nil)
+          assert_equal 10, @conn.type_cast(10)
+          assert_equal 2.2, @conn.type_cast(2.2)
         end
 
         def test_type_cast_nil
-          assert_equal nil, @conn.type_cast(nil, nil)
+          assert_equal nil, @conn.type_cast(nil)
         end
 
         def test_type_cast_true
-          assert_equal 't', @conn.type_cast(true, nil)
+          assert_equal 't', @conn.type_cast(true)
         end
 
         def test_type_cast_false
-          assert_equal 'f', @conn.type_cast(false, nil)
+          assert_equal 'f', @conn.type_cast(false)
         end
 
         def test_type_cast_bigdecimal
           bd = BigDecimal.new '10.0'
-          assert_equal bd.to_f, @conn.type_cast(bd, nil)
+          assert_equal bd.to_f, @conn.type_cast(bd)
         end
 
         def test_type_cast_unknown_should_raise_error
           obj = Class.new.new
-          assert_raise(TypeError) { @conn.type_cast(obj, nil) }
+          assert_raise(TypeError) { @conn.type_cast(obj) }
         end
 
         def test_type_cast_object_which_responds_to_quoted_id
@@ -73,14 +73,14 @@ def id
               10
             end
           }.new
-          assert_equal 10, @conn.type_cast(quoted_id_obj, nil)
+          assert_equal 10, @conn.type_cast(quoted_id_obj)
 
           quoted_id_obj = Class.new {
             def quoted_id
               "'zomg'"
             end
           }.new
-          assert_raise(TypeError) { @conn.type_cast(quoted_id_obj, nil) }
+          assert_raise(TypeError) { @conn.type_cast(quoted_id_obj) }
         end
 
         def test_quoting_binary_strings