Test: Modified timeout values

- Removed timeout for bulk.t, context.t
- Increased timeout for delete.t

test/context.t

@@ -47,7 +47,7 @@ class ContextManagementTest(TestCase):
         """With confirmation active, prompt if context filter matches no tasks"""
         self.t.config("confirmation", "on")
 
-        code, out, err = self.t.runError('context define work project:Work', timeout=0.2)
+        code, out, err = self.t.runError('context define work project:Work')
         self.assertIn("The filter 'project:Work' matches 0 pending tasks.", out)
         self.assertNotIn("Context 'work' defined.", out)