Drop dead custom_rrule column from events

Forms were already cleaned up in an earlier commit; the column itself
was the last remnant.

Dropping the column surfaced a live reference in events#index (fixed
separately, 970f108) - this migration file itself just never got
staged until now.

1 files changed, 5 insertions, 0 deletions

diff --git a/db/migrate/20260706014724_drop_custom_rrule_from_events.rb b/db/migrate/20260706014724_drop_custom_rrule_from_events.rb
new file mode 100644
index 0000000..7e27ba7
--- /dev/null
+++ b/db/migrate/20260706014724_drop_custom_rrule_from_events.rb
@@ -0,0 +1,5 @@
+class DropCustomRruleFromEvents < ActiveRecord::Migration[8.1]
+  def change
+    remove_column :events, :custom_rrule, :string
+  end
+end