Removing class Item_func_integer. It's not used since MySQL-5.0.

sql/item_func.cc

@@ -2313,15 +2313,6 @@ longlong Item_func_bit_neg::val_int()
 
 // Conversion functions
 
-void Item_func_integer::fix_length_and_dec()
-{
-  max_length=args[0]->max_length - args[0]->decimals+1;
-  uint tmp=float_length(decimals);
-  set_if_smaller(max_length,tmp);
-  decimals=0;
-}
-
-
 void Item_func_int_val::fix_length_and_dec()
 {
   DBUG_ENTER("Item_func_int_val::fix_length_and_dec");

sql/item_func.h

@@ -949,13 +949,6 @@ class Item_func_cot :public Item_dec_func
   const char *func_name() const { return "cot"; }
 };
 
-class Item_func_integer :public Item_int_func
-{
-public:
-  inline Item_func_integer(THD *thd, Item *a): Item_int_func(thd, a) {}
-  void fix_length_and_dec();
-};
-
 
 class Item_func_int_val :public Item_func_num1
 {