Migrate print-calling-conventions to rmake

Author: Rejyr

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -89,7 +89,6 @@ run-make/pgo-gen-lto/Makefile
 run-make/pgo-gen-no-imp-symbols/Makefile
 run-make/pgo-indirect-call-promotion/Makefile
 run-make/pointer-auth-link-with-c/Makefile
-run-make/print-calling-conventions/Makefile
 run-make/print-target-list/Makefile
 run-make/raw-dylib-alt-calling-convention/Makefile
 run-make/raw-dylib-c/Makefile

tests/run-make/print-calling-conventions/Makefile

@@ -0,0 +1,5 @@
+use run_make_support::rustc;
+
+fn main() {
+    rustc().print("calling-conventions").run();
+}