Temporarily turn off logging initialization

Will be restored as soon as I find a way for the runtime
to figure out whether it is on rustboot or rustc.

src/rt/rust.cpp

@@ -80,9 +80,10 @@ extern "C" CDECL int
 rust_start(uintptr_t main_fn, rust_crate const *crate, int argc,
            char **argv, void* crate_map) {
 
-    // Only when we're on rustc is the last argument passed
-    if (!crate->get_image_base())
-        update_log_settings(crate_map, getenv("RUST_LOG"));
+    // FIXME commented out until I figure out how to detect rustboot in a sane
+    // way
+    /* if (NOT_USING_RUSTBOOT)
+          update_log_settings(crate_map, getenv("RUST_LOG"));*/
     rust_srv *srv = new rust_srv();
     rust_kernel *kernel = new rust_kernel(srv);
     kernel->start();