remove useless line, update readme

README.md

@@ -1,6 +1,18 @@
 # speedwm
 ![image](/docs/preview.png)
 
+## Notice
+
+speedwm is **no longer being maintained** beyond any fixes I wish to add.
+speedwm is slow and bloated, definitely not good enough. I am
+currently working on a replacement for speedwm.
+
+The slowness isn't particularly noticeable on modern hardware, but even
+10 year old computers struggle.
+
+You may continue to use it if you want, but I will not provide any support
+for it.
+
 ## Table of contents
 
 0. Table of contents

speedwm.c

@@ -3329,7 +3329,6 @@ manage(Window w, XWindowAttributes *wa)
 	c->h = c->oldh = wa->height;
 	c->oldbw = wa->border_width;
 	c->cfact = 1.0;
-    c->allowkill = c->allowkill; /* we can kill by default */
 
     #if USEWINICON
     updateicon(c);