markdownlint: remove unneeded config

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic5b0d6fc23086236f7b371a82d02edf048df4354
diff --git a/.markdownlint.yaml b/.markdownlint.yaml
deleted file mode 100644
index f5cfbee..0000000
--- a/.markdownlint.yaml
+++ /dev/null
@@ -1,5 +0,0 @@
-default: true
-MD024:
-    siblings_only: true
-MD013:
-    stern: true