[source] musl: remove sh3 workaround

[LEDE Commits]

hauke pushed a commit to source.git, branch master:
https://git.lede-project.org/?p=source.git;a=commitdiff;h=3e5b50a8a74a6f32e9eb4490529ac9c74b5e3670

commit 3e5b50a8a74a6f32e9eb4490529ac9c74b5e3670
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Wed Jul 13 12:35:18 2016 +0200

    musl: remove sh3 workaround
    
    The GCC bug 67260 is fixed upstream now, remove this workaround.
    
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 toolchain/musl/common.mk | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/toolchain/musl/common.mk b/toolchain/musl/common.mk
index de00ea0..aa17899 100644
--- a/toolchain/musl/common.mk
+++ b/toolchain/musl/common.mk
@@ -23,12 +23,6 @@ HOST_BUILD_DIR:=$(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)-$(PKG_VERSION)
 include $(INCLUDE_DIR)/toolchain-build.mk
 include $(INCLUDE_DIR)/hardening.mk
 
-# Please see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67260
-ifeq ($(CONFIG_sh3),y)
-TARGET_CFLAGS+= \
-	-fno-optimize-sibling-calls
-endif
-
 MUSL_CONFIGURE:= \
 	$(TARGET_CONFIGURE_OPTS) \
 	CFLAGS="$(TARGET_CFLAGS)" \