pytest: test_gossip_jsonrpc can always test aliases.

The whole test is under DEVELOPER anyway, but even if it weren't it
would work fine.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tests/test_lightningd.py

@@ -2455,8 +2455,6 @@ class LightningDTests(BaseLightningDTests):
         assert n2['nodeid'] == l2.info['id']
 
         # Might not have seen other node-announce yet.
-        # TODO(cdecker) Can't check these without DEVELOPER=1, re-enable after we get alias and color into getinfo
-        if DEVELOPER:
         assert n1['alias'].startswith('JUNIORBEAM')
         assert n1['color'] == '0266e4'
         if 'alias' not in n2: