Remove redesign issue template

The redesign is just the design now

Signed-off-by: Aaron Raimist <aaron@raim.ist>

.github/ISSUE_TEMPLATE/redesign_issue.md

@@ -1,32 +0,0 @@
----
-name: Redesign Issue
-about: Bugs, feedback or feature requests specifically associated with the Redesign
-  project (https://riot.im/experimental)
-title: ''
-labels: redesign
-assignees: ''
-
----
-
-<!-- Thanks for providing feedback on the redesign! By filling out the sections with your information, you will help the us to process your issue.
--->
-
-- **Browser**: Chrome, Safari, Firefox? which version?
-- **OS**: Windows, macOS, Ubuntu, Arch Linux, etc?
-
-### Description
-
-Describe here the problem that you are experiencing, or the feature you are requesting.
-Include screenshots if possible: you can drag and drop images below.
-
-### Steps to reproduce
-
-- For bugs, list the steps
-- that reproduce the bug
-- using hyphens as bullet points
-
-Describe how what happens differs from what you expected.
-
-Log: sent/not sent?    <!-- You can send us the app's logs via the 'Report bug'
-link on the 'Settings' page. Very important for hard-to-reproduce bugs. Please
-file a bug here too! -->