toolchain: remove binutils bug 21464

This bug has been fixed upstream and backported to buildroot binutils
package. So let's remove it from toolchain/Config.in and from packages
that are affected by it:
- libgeos
- postgis
- protobuf

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libgeos/Config.in

@@ -2,7 +2,6 @@ config BR2_PACKAGE_LIBGEOS
 	bool "libgeos"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_WCHAR
-	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464
 	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597
 	help
 	  GEOS (Geometry Engine - Open Source) is a C++ port of the
@@ -13,7 +12,6 @@ config BR2_PACKAGE_LIBGEOS
 
 	  https://trac.osgeo.org/geos
 
-comment "libgeos needs a toolchain w/ C++, wchar, not binutils bug 21464, 27597"
+comment "libgeos needs a toolchain w/ C++, wchar, not binutils bug 27597"
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR || \
-		   BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 || \
 		   BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597

package/postgis/Config.in

@@ -6,7 +6,6 @@ config BR2_PACKAGE_POSTGIS
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 # C++11, proj
 	depends on BR2_TOOLCHAIN_HAS_THREADS # proj
 	depends on BR2_USE_WCHAR # libgeos, proj
-	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 # libgeos
 	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597 # libgeos
 	select BR2_PACKAGE_LIBGEOS
 	select BR2_PACKAGE_PROJ
@@ -20,9 +19,8 @@ config BR2_PACKAGE_POSTGIS
 
 	  https://postgis.net/
 
-comment "postgis needs a toolchain w/ C++, threads, wchar, gcc >= 4.7, not binutils bug 21464, 27597"
+comment "postgis needs a toolchain w/ C++, threads, wchar, gcc >= 4.7, not binutils bug 27597"
 	depends on !BR2_microblazeel && !BR2_microblazebe # ICE
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 || \
 		!BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR || \
-		BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 || \
 		BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597

package/protobuf/Config.in

@@ -24,7 +24,6 @@ config BR2_PACKAGE_PROTOBUF_ARCH_SUPPORTS
 	default y if BR2_TOOLCHAIN_HAS_ATOMIC
 	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
 	depends on BR2_USE_MMU # fork()
-	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464
 
 config BR2_PACKAGE_PROTOBUF
 	bool "protobuf"

toolchain/Config.in

@@ -71,12 +71,6 @@ source "package/gdb/Config.in.host"
 
 comment "Toolchain Generic Options"
 
-# https://sourceware.org/bugzilla/show_bug.cgi?id=21464
-# Affect toolchains built with binutils 2.31.1, still not fixed.
-config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464
-	bool
-	default y if BR2_or1k
-
 # https://sourceware.org/bugzilla/show_bug.cgi?id=27597
 # Affect toolchains built with binutils 2.36.1, still not fixed.
 config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597