Remove provider configuration

This is being moved to zuul-providers.

Change-Id: I82325b1becc770a069a7718b3d638be30123adf5

zuul.d/flavors.yaml

@@ -1,2 +0,0 @@
-- flavor:
-    name: normal

zuul.d/images.yaml

@@ -1,3 +0,0 @@
-- image:
-    name: debian-bullseye
-    type: zuul

zuul.d/labels.yaml

@@ -1,7 +0,0 @@
-# During testing, prefix all label names with "niz-" so it's very
-# clear which system we're using.
-
-- label:
-    name: niz-debian-bullseye-normal
-    image: debian-bullseye
-    flavor: normal

zuul.d/providers.yaml

@@ -1,35 +0,0 @@
-# Rackspace Flex
-- section:
-    name: raxflex-base
-    abstract: true
-    connection: raxflex
-    boot-timeout: 120
-    launch-timeout: 600
-    networks:
-      - opendevzuul-network1
-
-- section:
-    name: raxflex-sjc3
-    parent: raxflex-base
-    region: SJC3
-
-- provider:
-    name: raxflex-sjc3-main
-    section: raxflex-sjc3
-
-# Vexxhost
-- section:
-    name: vexxhost-base
-    abstract: true
-    connection: vexxhost
-    boot-timeout: 120
-    launch-timeout: 600
-
-- section:
-    name: vexxhost-ca-ymq-1
-    parent: vexxhost-base
-    region: ca-ymq-1
-
-- provider:
-    name: vexxhost-ca-ymq-1-main
-    section: vexxhost-ca-ymq-1