patch 9.0.1711: dead code in charset.c

Problem: dead code in charset.c
Solution: remove it

linetabsize_col() calls init_chartabsize_arg() with 0 as "lnum", so
cts.cts_has_prop_with_text is always FALSE.

closes: #PR

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
diff --git a/src/charset.c b/src/charset.c
index 92567bf..7ffd8d8 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -769,14 +769,6 @@
     init_chartabsize_arg(&cts, curwin, 0, startcol, s, s);
     while (*cts.cts_ptr != NUL)
 	cts.cts_vcol += lbr_chartabsize_adv(&cts);
-#ifdef FEAT_PROP_POPUP
-    if (cts.cts_has_prop_with_text && cts.cts_ptr == cts.cts_line)
-    {
-	// check for virtual text in an empty line
-	(void)lbr_chartabsize_adv(&cts);
-	cts.cts_vcol += cts.cts_cur_text_width;
-    }
-#endif
     clear_chartabsize_arg(&cts);
     return (int)cts.cts_vcol;
 }
diff --git a/src/version.c b/src/version.c
index 100dd95..3a7d4bb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1711,
+/**/
     1710,
 /**/
     1709,