icu: Remove unnecessary FULL_OPTIMIZATION_arm setting

This is distro policy and shouldn't be getting set by the recipe. It was added in commit 9b547ecf849b66aa883328fb6b26d9b412a4d2ec as a workaround for gcc bug #37436, but the compiler bug was fixed more than four years ago and the workaround is no longer required.

---
 meta/recipes-support/icu/icu.inc |    1 -
 1 file changed, 1 deletion(-)

index d7cb84a..77efcdb 100644
@@ -10,7 +10,6 @@ S = "${WORKDIR}/icu/source"
 STAGING_ICU_DIR_NATIVE = "${STAGING_DATADIR_NATIVE}/${BPN}/${PV}"
 
 PARALLEL_MAKE = ""
-FULL_OPTIMIZATION_arm = "-Os"
 CPPFLAGS_append_libc-uclibc = " -DU_TIMEZONE=0"
 
 inherit autotools pkgconfig binconfig

1.7.10.4