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

[Carlos De Maine]

Git commit b4afdebf29226fc8ef32da69a39c2e24692573a8 by Carlos De Maine.
Committed on 09/01/2025 at 12:33.
Pushed by carlosdem into branch 'Neon/release'.

Revert "fake signing-key.asc"

This reverts commit 05ab31f59818d53968bce225f4dee38385a698bd

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

https://invent.kde.org/neon/qt6/qt6-shadertools/-/commit/b4afdebf29226fc8ef32da69a39c2e24692573a8

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