From c2d874e0d0eddef2adaac79f4e37ce07b67d0b27 Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Tue, 14 Dec 2021 23:23:11 +0100
Subject: [PATCH] tests/posix_sleep: remove custom periph_rtt inclusion for
 ztimer

---
 tests/posix_sleep/Makefile | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/tests/posix_sleep/Makefile b/tests/posix_sleep/Makefile
index 4c534b1372..2d5f6f5dda 100644
--- a/tests/posix_sleep/Makefile
+++ b/tests/posix_sleep/Makefile
@@ -2,12 +2,4 @@ include ../Makefile.tests_common
 
 USEMODULE += posix_sleep
 
-# These CPU families have a non configurable RTT of 1Hz, not enough for
-# ztimer_msec to run on periph_rtt
-ifeq (,$(filter efm32 kinetis,$(CPU)))
-  # Pull-in periph-rtt on boards that provide this feature to switch to
-  # the RTT backend of ztimer
-  FEATURES_OPTIONAL += periph_rtt
-endif
-
 include $(RIOTBASE)/Makefile.include