[PATCH] selftests: riscv: Fix compilation error with vstate_exec_nolibc.c

[Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>]

The following error happens:

In file included from vstate_exec_nolibc.c:2:
/usr/include/riscv64-linux-gnu/sys/prctl.h:42:12: error: conflicting types for ‘prctl’; h
ave ‘int(int, ...)’
   42 | extern int prctl (int __option, ...) __THROW;
      |            ^~~~~
In file included from ./../../../../include/nolibc/nolibc.h:99,
                 from <command-line>:
./../../../../include/nolibc/sys.h:892:5: note: previous definition of ‘prctl’ with type
‘int(int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)
’
  892 | int prctl(int option, unsigned long arg2, unsigned long arg3,
      |     ^~~~~

Fix this by not including <sys/prctl.h>, which is not needed here since
prctl syscall is directly called using its number.

Fixes: 7cf6198ce22d ("selftests: Test RISC-V Vector prctl interface")
Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
---
 tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c b/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c
index 5cbc392944a6..2c0d2b1126c1 100644
--- a/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c
+++ b/tools/testing/selftests/riscv/vector/vstate_exec_nolibc.c
@@ -1,6 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0-only
-#include <sys/prctl.h>
-
 #define THIS_PROGRAM "./vstate_exec_nolibc"
 
 int main(int argc, char **argv)
-- 
2.39.2