dev-libs/botan: remove gcc version check

long since there was an issue with gcc C++11.

Bug: 618958

Package-Manager: Portage-2.3.5, Repoman-2.3.1

dev-libs/botan/botan-2.1.0.ebuild

@@ -33,15 +33,6 @@ DEPEND="${RDEPEND}
 	dev-lang/python:*
 	doc? ( dev-python/sphinx )"
 
-pkg_pretend() {
-	# Botan 1.11 requires -std=c++11
-	if [[ ${MERGE_TYPE} != binary ]]; then
-		[[ $(gcc-major-version) -lt 4 ]] || \
-		( [[ $(gcc-major-version) -eq 4 && $(gcc-minor-version) -lt 7 ]] ) \
-		&& die "Sorry, but gcc 4.7 or higher is required."
-	fi
-}
-
 src_prepare() {
 	default
 	use doc || sed \