arch: risc-v: Remove FPU support from qemu-rv

Summary:
- Because a context switch issue still exists with FPU
  the configs should be removed until it works.

Impact:
- None

Testing:
- Tested with ostest

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

arch/risc-v/Kconfig

@@ -134,8 +134,6 @@ config ARCH_CHIP_RV32M1
 
 config ARCH_CHIP_QEMU_RV
 	bool "QEMU RV"
-	select ARCH_HAVE_FPU
-	select ARCH_HAVE_DPFPU
 	select ARCH_HAVE_MULTICPU
 	select ARCH_HAVE_MPU
 	select ARCH_HAVE_MMU