SDL: Vita: fix thread detach. Remove leftover KillThread

From 512355d7aa7ee267d31a43909bf2e2748f4ca957 Mon Sep 17 00:00:00 2001
From: Ivan Epifanov <[EMAIL REDACTED]>
Date: Mon, 20 Sep 2021 20:21:05 +0300
Subject: [PATCH] Vita: fix thread detach. Remove leftover KillThread

---
 src/thread/vita/SDL_systhread.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/src/thread/vita/SDL_systhread.c b/src/thread/vita/SDL_systhread.c
index 70a89c3e49..ee1ecac5e0 100644
--- a/src/thread/vita/SDL_systhread.c
+++ b/src/thread/vita/SDL_systhread.c
@@ -107,13 +107,7 @@ void SDL_SYS_WaitThread(SDL_Thread *thread)
 
 void SDL_SYS_DetachThread(SDL_Thread *thread)
 {
-    /* !!! FIXME: is this correct? */
-    sceKernelDeleteThread(thread->handle);
-}
-
-void SDL_SYS_KillThread(SDL_Thread *thread)
-{
-    sceKernelDeleteThread(thread->handle);
+    /* Do nothing. */
 }
 
 int SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)