Release process: drop steps that have been automated in the Greeter's release script.

wiki/src/contribute/release_process/tails-greeter.mdwn

@@ -14,33 +14,17 @@ Update POT and PO files
        ) && \
        git commit po -m 'Update POT and PO files.'
 
-
 Prepare a release
 =================
 
-Run `./scripts/release.sh` and follow the instructions.
+    git checkout master && ./scripts/release.sh
 
+… then follow the instructions, making sure you set the appropriate
+release on the first line of the new changelog entry.
 
 Update the Debian package
 =========================
 
-Checkout the correct branch:
-
-    git checkout master
-
-Update `debian/changelog`:
-
-    gbp dch
-
-(Do not forget to set the appropriate release.)
-
-Commit the changelog:
-
-    git commit debian/changelog \
-        -m "$(dpkg-parsechangelog -SSource) ($(dpkg-parsechangelog -SVersion))
-    Git-Dch: Ignore
-    "
-
 Build a new Debian package (use a Stretch/amd64 chroot):
 
     gbp buildpackage