package/flutter-engine/Config.in: Drop nptl dependency

As Yann mentioned in commit 9d8497e79de3ced144877ba6ee38cc5b7181aaeb, a
dependency on a glibc toolchain implies a dependency on
BR2_TOOLCHAIN_HAS_THREADS_NPTL. As such, remove the dependency from
package/flutter-engine/Config.in.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/flutter-engine/Config.in

@@ -11,7 +11,6 @@ config BR2_PACKAGE_FLUTTER_ENGINE
 	depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5
-	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # pthreads
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::shared_future
 	depends on !BR2_STATIC_LIBS
@@ -68,12 +67,11 @@ comment "flutter-engine needs an OpenGL or OpenGLES backend"
 	depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
 	depends on !BR2_PACKAGE_HAS_LIBGL && !BR2_PACKAGE_HAS_LIBGLES
 
-comment "flutter-engine needs a glibc toolchain w/ wchar, C++, gcc >= 5, dynamic library, host gcc >= 5, NPTL"
+comment "flutter-engine needs a glibc toolchain w/ wchar, C++, gcc >= 5, dynamic library, host gcc >= 5"
 	depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
-	depends on !BR2_TOOLCHAIN_USES_GLIBC || !BR2_TOOLCHAIN_HAS_THREADS_NPTL \
-		|| !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_5 \
-		|| BR2_STATIC_LIBS || !BR2_USE_WCHAR \
-		|| !BR2_HOST_GCC_AT_LEAST_5
+	depends on !BR2_TOOLCHAIN_USES_GLIBC || !BR2_INSTALL_LIBSTDCPP \
+		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_5 || BR2_STATIC_LIBS \
+		|| !BR2_USE_WCHAR || !BR2_HOST_GCC_AT_LEAST_5
 
 comment "flutter-engine needs a toolchain not affected by GCC bug 64735"
 	depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS