remove u8 and i32 aliases

vlib/builtin/int.v

@@ -80,6 +80,7 @@ pub fn (nn u32) str() string {
 	return tos(buf + max - len, len)
 }
 
+/*
 pub fn (nn u8) str() string {
 	 mut n := nn
 	if n == u8(0) {
@@ -97,6 +98,7 @@ pub fn (nn u8) str() string {
 	}
 	return tos(buf + max - len, len)
 }
+*/
 
 pub fn (nn i64) str() string {
 	mut n := nn

vlib/builtin/int_test.v

@@ -1,22 +1,22 @@
 const (
 	a = 3
-	u = u64(1) 
-) 
+	u = u64(1)
+)
 
 fn test_const() {
-	b := (true && true) || false 
-	assert b == true 
-	assert a == 3 
-	assert u == u64(1) 
-} 
+	b := (true && true) || false
+	assert b == true
+	assert a == 3
+	assert u == u64(1)
+}
 
 fn test_str_methods() {
 	assert i8(1).str() == '1'
 	assert i8(-1).str() == '-1'
 	assert i16(1).str() == '1'
 	assert i16(-1).str() == '-1'
-	assert i32(1).str() == '1'
-	assert i32(-1).str() == '-1'
+	assert int(1).str() == '1'
+	assert int(-1).str() == '-1'
 	assert i64(1).str() == '1'
 	assert i64(-1).str() == '-1'
 
@@ -35,5 +35,5 @@ fn test_cmp() {
 	assert 1 ≠ 2
 	assert 1 ⩽ 2
 	assert 1 ⩾ 0
-} 
+}
 */

vlib/builtin/map_test.v

@@ -102,14 +102,6 @@ fn test_various_map_value() {
 	m4['test'] = i16(0)
 	assert m4['test'] == i16(0)
 	
-	mut m5 := map[string]i32
-	m5['test'] = i32(0)
-	assert m5['test'] == i32(0)
-	
-	mut m6 := map[string]u8
-	m6['test'] = u8(0)
-	assert m6['test'] == u8(0)
-	
 	mut m7 := map[string]u16
 	m7['test'] = u16(0)
 	assert m7['test'] == u16(0)

vlib/builtin/string.v

@@ -132,9 +132,6 @@ pub fn (s string) int() int {
 	return C.atoi(s.str)
 }
 
-pub fn (s string) i32() i32 {
-	return C.atol(s.str)
-}
 
 pub fn (s string) i64() i64 {
 	return C.atoll(s.str)
@@ -501,7 +498,7 @@ pub fn (s string) to_upper() string {
 pub fn (s string) capitalize() string {
 	sl := s.to_lower()
     cap := sl[0].str().to_upper() + sl.right(1)
-	return cap 
+	return cap
 }
 
 pub fn (s string) title() string {