selectrum: remove embark export/collect popup rules

They don't seem to be necessary anymore, and cause issues with window
opening logic when clicking on links in exported grep buffers.

modules/completion/selectrum/TODO.org

@@ -80,11 +80,14 @@ working of this whole set up are a bit opaque to me.
 
 * PROJ Review blocking Issues
 ** TODO Embark export window buffer switching logic
-If we export bookmarks, grep session, or ~find-file~ session, when pressing
-enter, it opens the new buffer in another window rather than the main one, even
-though at least the bookmark function ostensibly uses
-~pop-to-buffer-same-window~. Ivy gets the window switched in the bookmarks and
-grep case due to a custom ivy occur window switching function.
+*** DONE ~grep~
+The clicking links exported grep buffers used to open in a new window, but now
+  open in another window. Caused by the ~set-popup-rule!~ entries for the embark
+  export/collect buffers. These don't seem to serve much of a purpose at this
+  point so they have been removed.
+*** TODO Open upstream Embark issue for ~bookmark~ and ~file~
+~bookmark~ or ~file~ export buffers open the links in the same window rather than
+the other one. This can be reproduces on emacs -Q.
 ** TODO Icons
 Partially solved, seems to have interaction with selectrum height issue, so not
 yet implemented.

modules/completion/selectrum/config.el

@@ -133,9 +133,7 @@
         "h" #'doom/help-packages
         "b" #'doom/bump-package
         "c" #'doom/help-package-config
-        "u" #'doom/help-package-homepage)
-  (set-popup-rule! "^\\*Embark Export" :size 0.35 :ttl 0 :quit nil)
-  (set-popup-rule! "^\\*Embark Collect" :size 0.35 :ttl 0 :quit nil))
+        "u" #'doom/help-package-homepage))
 
 (use-package! marginalia
   :hook (doom-first-input . marginalia-mode)