[neon/qt6/qt6-quicktimeline/Neon/release] debian/upstream: Revert "fake signing-key.asc"

[Carlos De Maine]

Git commit 162e45ac1cb164b5ab8f476e8da38f3fae47f985 by Carlos De Maine.
Committed on 09/01/2025 at 12:32.
Pushed by carlosdem into branch 'Neon/release'.

Revert "fake signing-key.asc"

This reverts commit 2abb94b8de7e2ff2151e5eb01b6febb73409897e

D  +0    -0    debian/upstream/signing-key.asc

https://invent.kde.org/neon/qt6/qt6-quicktimeline/-/commit/162e45ac1cb164b5ab8f476e8da38f3fae47f985

diff --git a/debian/upstream/signing-key.asc b/debian/upstream/signing-key.asc
deleted file mode 100644
index e69de29..0000000