[LyX/master] Revert "Update correctly completion after undo"

[Jean-Marc Lasgouttes]

commit ada713a8815063cfa9fbd4666b3ae5a220a07eba
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Mon Oct 18 17:35:48 2021 +0200

    Revert "Update correctly completion after undo"
    
    This reverts commit 06acb7f806f99cd418781f9d0645b213f8241062.
---
 src/frontends/qt/GuiView.cpp |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/src/frontends/qt/GuiView.cpp b/src/frontends/qt/GuiView.cpp
index 9126d48..767791f 100644
--- a/src/frontends/qt/GuiView.cpp
+++ b/src/frontends/qt/GuiView.cpp
@@ -4067,10 +4067,8 @@ void GuiView::dispatchToBufferView(FuncRequest const & cmd, DispatchResult & dr)
 	// Let the current BufferView dispatch its own actions.
 	bv->dispatch(cmd, dr);
 	if (dr.dispatched()) {
-		if (cmd.action() == LFUN_REDO || cmd.action() == LFUN_UNDO) {
-			updateCompletion(bv->cursor(), true, false);
+		if (cmd.action() == LFUN_REDO || cmd.action() == LFUN_UNDO)
 			updateDialog("document", "");
-		}
 		return;
 	}