devel/sdl20: always enable pthreads support

PR:		278353
Submitted by:	diizzy

devel/sdl20/Makefile

@@ -52,13 +52,13 @@ MAKE_ENV=	V=1
 
 PORTSCOUT=	limitw:1,even
 
-OPTIONS_DEFINE=		ASM CSD DBUS FCITX IBUS JOYSTICK HIDAPI PTHREADS \
+OPTIONS_DEFINE=		ASM CSD DBUS FCITX IBUS JOYSTICK HIDAPI \
 			SAMPLERATE UDEV
 OPTIONS_GROUP=		AUDIO VIDEO
 OPTIONS_GROUP_AUDIO=	ALSA JACK NAS OSS PIPEWIRE PULSEAUDIO SNDIO
 OPTIONS_GROUP_VIDEO=	KMSDRM OPENGL OPENGLES1 OPENGLES2 VULKAN \
 			WAYLAND X11
-OPTIONS_DEFAULT=	ASM JOYSTICK OSS PTHREADS KMSDRM OPENGL \
+OPTIONS_DEFAULT=	ASM JOYSTICK OSS KMSDRM OPENGL \
 			OPENGLES1 OPENGLES2 VULKAN WAYLAND X11
 OPTIONS_DEFINE_powerpc=	ALTIVEC
 OPTIONS_DEFINE_powerpc64=	ALTIVEC
@@ -76,7 +76,6 @@ JOYSTICK_DESC=		Joystick and haptic support
 KMSDRM_DESC=		KMSDRM display support
 OPENGLES1_DESC=		OpenGL ES 1.x rendering support
 OPENGLES2_DESC=		OpenGL ES 2.x rendering support
-PTHREADS_DESC=		Use POSIX threads for multi-threading
 UDEV_DESC=		Use udev for input device detection
 VULKAN_DESC=		Vulkan rendering support
 
@@ -138,8 +137,6 @@ OSS_CONFIGURE_ENABLE=		oss
 PIPEWIRE_CONFIGURE_ENABLE=	pipewire pipewire-shared
 PIPEWIRE_LIB_DEPENDS=		libpipewire-0.3.so:multimedia/pipewire
 
-PTHREADS_CONFIGURE_ENABLE=	pthreads pthread-sem
-
 PULSEAUDIO_CONFIGURE_ENABLE=	pulseaudio pulseaudio-shared
 PULSEAUDIO_LIB_DEPENDS=		libpulse.so:audio/pulseaudio