Remove duplicate code for riscv

Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>

--- a/src/include/storage/s_lock.h
+++ b/src/include/storage/s_lock.h
@@ -341,30 +341,6 @@ tas(volatile slock_t *lock)
 #endif	 /* HAVE_GCC__SYNC_INT32_TAS */
 #endif	 /* __arm__ || __arm || __aarch64__ || __aarch64 || __riscv */
 
-
-/*
- * RISC-V likewise uses __sync_lock_test_and_set(int *, int) if available.
- */
-#if defined(__riscv)
-#ifdef HAVE_GCC__SYNC_INT32_TAS
-#define HAS_TEST_AND_SET
-
-#define TAS(lock) tas(lock)
-
-typedef int slock_t;
-
-static __inline__ int
-tas(volatile slock_t *lock)
-{
-	return __sync_lock_test_and_set(lock, 1);
-}
-
-#define S_UNLOCK(lock) __sync_lock_release(lock)
-
-#endif	 /* HAVE_GCC__SYNC_INT32_TAS */
-#endif	 /* __riscv */
-
-
 /* S/390 and S/390x Linux (32- and 64-bit zSeries) */
 #if defined(__s390__) || defined(__s390x__)
 #define HAS_TEST_AND_SET