Revert "Set content-type to routes that had none set"

This reverts commit 0dc67226dd38d5e603c9abc9f443809010ae85ee.

No longer needed after 944cd04.

Resolves: openbmc/openbmc#1932

Change-Id: I0f0a3fe2462cfd287ea7d7692fa47de685d595ea
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/module/obmc/wsgi/apps/rest_dbus.py b/module/obmc/wsgi/apps/rest_dbus.py
index ab02705..41538bc 100644
--- a/module/obmc/wsgi/apps/rest_dbus.py
+++ b/module/obmc/wsgi/apps/rest_dbus.py
@@ -440,11 +440,10 @@
 class SchemaHandler(RouteHandler):
     verbs = ['GET']
     rules = '<path:path>/schema'
-    content_type = 'application/json'
 
     def __init__(self, app, bus):
         super(SchemaHandler, self).__init__(
-            app, bus, self.verbs, self.rules, self.content_type)
+            app, bus, self.verbs, self.rules)
 
     def find(self, path):
         return self.try_mapper_call(
@@ -471,12 +470,11 @@
 class InstanceHandler(RouteHandler):
     verbs = ['GET', 'PUT', 'DELETE']
     rules = '<path:path>'
-    content_type = 'application/json'
     request_type = dict
 
     def __init__(self, app, bus):
         super(InstanceHandler, self).__init__(
-            app, bus, self.verbs, self.rules, self.content_type)
+            app, bus, self.verbs, self.rules)
 
     def find(self, path, callback=None):
         return {path: self.try_mapper_call(