lpceurobot: Remove compiler version warning

diff --git a/src/sysless b/src/sysless
index be8271fb3e8c1cd4207eaa4c73d8d485d14e0d95..b37ab591a7588cee8816354c0a31c73e91e49eca 160000 (submodule)
--- a/src/sysless
+++ b/src/sysless
@@ -1 +1 @@
-Subproject commit be8271fb3e8c1cd4207eaa4c73d8d485d14e0d95
+Subproject commit b37ab591a7588cee8816354c0a31c73e91e49eca