[neon/qt6/qt6-quick3dphysics/Neon/release] debian/upstream: Revert "fake signing-key.asc"

[Carlos De Maine]

Git commit 5274115c2a2d6b4c3d03cc834857a489bcfc661b by Carlos De Maine.
Committed on 09/01/2025 at 12:31.
Pushed by carlosdem into branch 'Neon/release'.

Revert "fake signing-key.asc"

This reverts commit e5356763689aea16d91a92e97c49522a0d832c9e

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

https://invent.kde.org/neon/qt6/qt6-quick3dphysics/-/commit/5274115c2a2d6b4c3d03cc834857a489bcfc661b

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