[neon/backports-noble/opencv-noble/Neon/release] debian/upstream: Revert "fake signing-key"

[Carlos De Maine]

Git commit b5b29e80a2b1744293587e7443dc746967f941e1 by Carlos De Maine.
Committed on 09/01/2025 at 09:42.
Pushed by carlosdem into branch 'Neon/release'.

Revert "fake signing-key"

This reverts commit e75c8a7f2de6b27ca1aeafd3799907933f8f41cd

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

https://invent.kde.org/neon/backports-noble/opencv-noble/-/commit/b5b29e80a2b1744293587e7443dc746967f941e1

diff --git a/debian/upstream/signing-key.asc b/debian/upstream/signing-key.asc
deleted file mode 100644
index e69de29bb2..0000000000