Remove a context for Fedora 35

None of the nextcloud module streams in epel8 are functional due to
missing runtime dependencies.  See rhbz#2042653 for more information.

nextcloud.yaml

@@ -0,0 +1,56 @@
+document: modulemd-packager
+version: 3
+data:
+    # === Information about this module =======================================
+    summary: A private file sync and share server - version 23.x.x
+    description: >-
+        Nextcloud gives you universal access to your files through a
+        web interface or WebDAV. It also provides a platform to easily
+        view & sync your contacts, calendars and bookmarks across all
+        your devices and enables basic editing right on the web.
+        Nextcloud is extendable via a simple but powerful API for
+        applications and plugins.
+
+    # === License of this modulemd file =======================================
+    license:
+      - MIT
+    # === Module context configurations =======================================
+    configurations:
+        # context:
+      - context: nx2
+        platform: f36
+      - context: nx3
+        platform: f37
+      - context: f38
+        platform: f38
+      - context: f39
+        platform: f39
+    # === Module API (optional, but encouraged) ===============================
+    api:
+        rpms:
+            - nextcloud
+            - nextcloud-httpd
+            - nextcloud-nginx
+            - nextcloud-mysql
+            - nextcloud-postgresql
+            - nextcloud-sqlite
+    # === Installation profiles (optional, but encouraged) ====================
+    profiles:
+        default:
+            description: A standard installation using HTTPD and MySQL.
+            rpms:
+                - nextcloud
+                - nextcloud-httpd
+                - nextcloud-mysql
+        testing:
+            description: A minimal installation for testing purposes
+            rpms:
+                - nextcloud
+                - nextcloud-httpd
+                - nextcloud-sqlite
+    # === Packages in this module =============================================
+    components:
+        rpms:
+            nextcloud:
+                ref: 23
+                rationale: Provides the functionality