[pdsl] Temporarily remove pdsl_derive from the workspace

This change was overdue since pdsl_derive is no longer in a properly working form.

Cargo.toml

@@ -2,7 +2,7 @@
 
 members = [
 	"pdsl_core",
-	"pdsl_derive",
+	# "pdsl_derive",
 	"pdsl_tests",
 	"examples/enzyme",
 ]