Remove access-token support from RegistrationHandler.register (#5641)

Nothing uses this now, so we can remove the dead code, and clean up the
API.

Since we're changing the shape of the return value anyway, we take the
opportunity to give the method a better name.

1 files changed, 1 insertions, 0 deletions

diff --git a/changelog.d/5641.misc b/changelog.d/5641.misc
new file mode 100644
index 0000000000..1899bc963d
--- /dev/null
+++ b/changelog.d/5641.misc
@@ -0,0 +1 @@
+Remove access-token support from RegistrationHandler.register, and rename it.