Don't ignore valid monitors

Rather than assume monitors are valid based on their width, just let the
usual RandR detection handle that.  This addresses the problem of
lemonbar "missing" certain monitors.

There's still more work to do here, but this is a stop-gap measure for
now.

lemonbar.c

@@ -1126,12 +1126,6 @@ get_randr_monitors (void)
                 else
                     free(name);
             }
-            // if this output is not in the list, skip it
-            if (j == num_outputs) {
-                mons[i].width = 0;
-                free(oi_reply);
-                continue;
-            }
         }
         else {
             // There's no need to handle rotated screens here (see #69)
@@ -1150,36 +1144,12 @@ get_randr_monitors (void)
     if (num_outputs)
         free(output_names);
 
-    // Check for clones and inactive outputs
+    if (valid == 0) {
-    for (i = 0; i < num; i++) {
-        if (mons[i].width == 0)
-            continue;
-
-        for (j = 0; j < num; j++) {
-            // Does I contain J ?
-
-            if (i != j && mons[j].width && !mons[j].name) {
-                if (mons[j].x >= mons[i].x && mons[j].x + mons[j].width <= mons[i].x + mons[i].width &&
-                    mons[j].y >= mons[i].y && mons[j].y + mons[j].height <= mons[i].y + mons[i].height) {
-                    mons[j].width = 0;
-                    valid--;
-                }
-            }
-        }
-    }
-
-    if (valid < 1) {
         fprintf(stderr, "No usable RandR output found\n");
         return;
     }
 
-    monitor_t m[valid];
+    monitor_create_chain(mons, valid);
-
-    for (i = j = 0; i < num && j < valid; i++)
-        if (mons[i].width != 0)
-            m[j++] = mons[i];
-
-    monitor_create_chain(m, valid);
 }
 
 #ifdef WITH_XINERAMA