8332130: RISC-V: remove wrong instructions of Vector Crypto Extension

Reviewed-by: luhenry, fyang

Author: Hamlin Li

src/hotspot/cpu/riscv/assembler_riscv.hpp

@@ -1869,15 +1869,10 @@ enum Nf {
 
   // Vector Bit-manipulation used in Cryptography (Zvkb) Extension
   INSN(vandn_vv,   0b1010111, 0b000, 0b000001);
-  INSN(vandn_vx,   0b1010111, 0b100, 0b000001);
   INSN(vclmul_vv,  0b1010111, 0b010, 0b001100);
-  INSN(vclmul_vx,  0b1010111, 0b110, 0b001100);
   INSN(vclmulh_vv, 0b1010111, 0b010, 0b001101);
-  INSN(vclmulh_vx, 0b1010111, 0b110, 0b001101);
   INSN(vror_vv,    0b1010111, 0b000, 0b010100);
-  INSN(vror_vx,    0b1010111, 0b100, 0b010100);
   INSN(vrol_vv,    0b1010111, 0b000, 0b010101);
-  INSN(vrol_vx,    0b1010111, 0b100, 0b010101);
 
 #undef INSN