Remove fedora image builds

This removes the fedora image builds from nodepool. At this point
Nodepool should no longer have any knowledge of fedora.

There is potential for other cleanups for things like dib elements, but
leaving those in place doesn't hurt much.

Change-Id: I3e6984bc060e9d21f7ad851f3a64db8bb555b38a

nodepool/nb04.opendev.org.yaml

@@ -156,12 +156,6 @@ diskimages:
   - name: rockylinux-9
     elements: []
 
-  - name: fedora-35
-    elements: []
-
-  - name: fedora-36
-    elements: []
-
   ############ Debian #############
 
   - name: debian-bookworm

nodepool/nl01.opendev.org.yaml

@@ -203,8 +203,6 @@ diskimages:
   - name: debian-bookworm
   - name: debian-bullseye
   - name: debian-buster
-  - name: fedora-35
-  - name: fedora-36
   - name: gentoo-17-0-systemd
   - name: opensuse-15
   - name: rockylinux-8

nodepool/nl02.opendev.org.yaml

@@ -176,8 +176,6 @@ diskimages:
   - name: debian-bookworm
   - name: debian-bullseye
   - name: debian-buster
-  - name: fedora-35
-  - name: fedora-36
   - name: gentoo-17-0-systemd
   - name: opensuse-15
   - name: rockylinux-8

nodepool/nl03.opendev.org.yaml

@@ -535,8 +535,6 @@ diskimages:
   - name: debian-bullseye-arm64
   - name: debian-buster
   - name: debian-buster-arm64
-  - name: fedora-35
-  - name: fedora-36
   - name: gentoo-17-0-systemd
   - name: opensuse-15
   - name: rockylinux-8

nodepool/nl04.opendev.org.yaml

@@ -224,8 +224,6 @@ diskimages:
   - name: debian-bookworm
   - name: debian-bullseye
   - name: debian-buster
-  - name: fedora-35
-  - name: fedora-36
   - name: gentoo-17-0-systemd
   - name: opensuse-15
   - name: rockylinux-8

nodepool/nodepool.yaml

@@ -214,24 +214,6 @@ diskimages:
     env-vars:
       DIB_EPEL_DISABLED: '1'
 
-  - name: fedora-35
-    parent: base
-    pause: false
-    python-path: /usr/bin/python3
-    elements:
-      - fedora-container
-      - cache-devstack
-    release: 35
-
-  - name: fedora-36
-    parent: base
-    pause: false
-    python-path: /usr/bin/python3
-    elements:
-      - fedora-container
-      - cache-devstack
-    release: 36
-
   ############ Debian #############
 
   - name: debian-bookworm