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

[Carlos De Maine]

Git commit 72f23de8366932e263c428a13cad2d37f06ad3b9 by Carlos De Maine.
Committed on 09/01/2025 at 12:41.
Pushed by carlosdem into branch 'Neon/release'.

Revert "fake signing-key.asc"

This reverts commit d2fa1612a23521bc3cd0c1ee18b60d61d1543d6d

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

https://invent.kde.org/neon/qt6/qt6-webengine/-/commit/72f23de8366932e263c428a13cad2d37f06ad3b9

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