cleanup: drop .DEREK.yml

Signed-off-by: Bjorn Neergaard <bneergaard@mirantis.com>

.DEREK.yml

@@ -1,22 +0,0 @@
-curators:
-  - aboch
-  - alexellis
-  - andrewhsu
-  - anonymuse
-  - arkodg
-  - chanwit
-  - ehazlett
-  - fntlnz
-  - gianarb
-  - kolyshkin
-  - mgoelzer
-  - olljanat
-  - programmerq
-  - rheinwein
-  - ripcurld0
-  - thajeztah
-
-features:
-  - comments
-  - pr_description_required
-