Remove invalid parameters from osbs config

JIRA: COMPOSE-4049
Signed-off-by: Haibo Lin <hlin@redhat.com>

doc/configuration.rst

@@ -1597,7 +1597,7 @@ they are not scratch builds).
 
 
     The configuration will pass other attributes directly to the Koji task.
-    This includes ``name``, ``version``, ``scratch`` and ``priority``.
+    This includes ``scratch`` and ``priority``.
 
     A value for ``yum_repourls`` will be created automatically and point at a
     repository in the current compose. You can add extra repositories with
@@ -1629,8 +1629,6 @@ Example config
             "git_branch": "f24-docker",
 
             # optional
-            "name": "fedora-docker-base",
-            "version": "24",
             "repo": ["Everything", "https://example.com/extra-repo.repo"],
             # This will result in three repo urls being passed to the task.
             # They will be in this order: Server, Everything, example.com/

pungi/checks.py

@@ -526,8 +526,6 @@ def make_schema():
                 "properties": {
                     "url": {"type": "url"},
                     "target": {"type": "string"},
-                    "name": {"type": "string"},
-                    "version": {"type": "string"},
                     "scratch": {"type": "boolean"},
                     "priority": {"type": "number"},
                     "repo": {