[gtksourceview/gtksourceview-4-8] Revert "contextengine: clear invalid ranges if BOM is found"

[Christian Hergert <chergert src gnome org>]

commit 114042938fef98d12e80a250e33b3cd61c85afa8
Author: Christian Hergert <chergert redhat com>
Date:   Tue Dec 1 13:34:53 2020 -0800

    Revert "contextengine: clear invalid ranges if BOM is found"
    
    This reverts commit 54e48e9c45e0ccef4d8fd8f5b9a8660aa6b0ae0b.
    
    Now that we have other measures in place to protect against BOM,
    we can remove this commit which caused all highlighting to be
    stopped after the line with the BOM.

 gtksourceview/gtksourcecontextengine.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/gtksourceview/gtksourcecontextengine.c b/gtksourceview/gtksourcecontextengine.c
index 882c4c94..79d70327 100644
--- a/gtksourceview/gtksourcecontextengine.c
+++ b/gtksourceview/gtksourcecontextengine.c
@@ -5393,8 +5393,6 @@ update_syntax (GtkSourceContextEngine *ce,
                        had_bom = TRUE;
                        gtk_text_iter_forward_char (&start_iter);
                        start_offset = gtk_text_iter_get_offset (&start_iter);
-                       segment_remove (ce, invalid);
-                       CHECK_TREE (ce);
                }
        }