scanner: remove unused .line_ends field

vlib/v/scanner/scanner.v

@@ -45,7 +45,6 @@ pub mut:
 	is_print_rel_paths_on_error bool
 	quote                       byte // which quote is used to denote current string: ' or "
 	inter_quote                 byte
-	line_ends                   []int // the positions of source lines ends   (i.e. \n signs)
 	nr_lines                    int  // total number of lines in the source file that were scanned
 	is_vh                       bool // Keep newlines
 	is_fmt                      bool // Used for v fmt.
@@ -512,6 +511,11 @@ fn (mut s Scanner) ident_number() string {
 fn (mut s Scanner) skip_whitespace() {
 	for s.pos < s.text.len {
 		c := s.text[s.pos]
+		if c == 8 {
+			// tabs are most common
+			s.pos++
+			continue
+		}
 		if !(c == 32 || (c > 8 && c < 14) || (c == 0x85) || (c == 0xa0)) {
 			return
 		}
@@ -1354,7 +1358,6 @@ fn (mut s Scanner) inc_line_number() {
 		s.last_nl_pos++
 	}
 	s.line_nr++
-	s.line_ends << s.pos
 	if s.line_nr > s.nr_lines {
 		s.nr_lines = s.line_nr
 	}