csp_thread: Remove csp_thread_return_t;
Now users of csp_thread_return_t are all gone.  Remove it.
#include <pthread.h>
-/**
- Platform specific thread return type.
-*/
-typedef void * csp_thread_return_t;
-
#endif // CSP_POSIX
/*
@@ -31,8 +26,6 @@ typedef void * csp_thread_return_t;
#include <windows.h>
-typedef unsigned int csp_thread_return_t;
-
#endif // CSP_WINDOWS
/*
@@ -43,8 +36,6 @@ typedef unsigned int csp_thread_return_t;
// #include <FreeRTOS.h>
// #include <task.h>
-typedef void csp_thread_return_t;
-
#endif // CSP_FREERTOS
/*
