Remove dupe name from Elixir snippets

snippets/elixir.snippets

@@ -102,7 +102,7 @@ snippet test
 	test "${1:test_name}" do
 		${0}
 	end
-snippet test "A ExUnit test" b
+snippet testa
 	test "${1:test_name}", %{${2:arg: arg}} do
 		${0}
 	end