ltp-testsuite: don't select libtirpc

Since commit 8f1c4c49a2a (ltp-testsuite: don't link with libtirpc)
ltp-testsuite does not need libtirpc. Don't select it.

Cc: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/ltp-testsuite/Config.in

@@ -7,7 +7,6 @@ config BR2_PACKAGE_LTP_TESTSUITE
 	depends on BR2_USE_MMU # fork()
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on !BR2_TOOLCHAIN_USES_MUSL
-	select BR2_PACKAGE_LIBTIRPC if !BR2_TOOLCHAIN_HAS_NATIVE_RPC
 	# does not build, cachectl.h issue
 	depends on !BR2_nios2
 	help