Fix memory leak for chunked prefill 2 (#1858)

Co-authored-by: Liangsheng Yin <hnyls2002@gmail.com>

scripts/killall_sglang.sh

@@ -1,6 +1,4 @@
-"""
-Kill all SGLang processes and free the GPU memory.
-"""
+# Kill all SGLang processes and free the GPU memory.
 
 kill -9 $(ps aux | grep 'multiprocessing.spawn' | grep -v 'grep' | awk '{print $2}')
 kill -9 $(ps aux | grep 'sglang.launch_server' | grep -v 'grep' | awk '{print $2}')