tcg: Remove TCG_TARGET_HAS_{br,set}cond2 from riscv and loongarch64

These defines never should have been added as they were
never used.  Only 32-bit hosts may have these opcodes and
they have them unconditionally.

Fixes: 6cb14e4de29 ("tcg/loongarch64: Add the tcg-target.h file")
Fixes: fb1f70f3685 ("tcg/riscv: Add the tcg-target.h file")
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg/loongarch64/tcg-target-has.h

@@ -37,8 +37,6 @@
 #define TCG_TARGET_HAS_clz_i32          1
 #define TCG_TARGET_HAS_ctz_i32          1
 #define TCG_TARGET_HAS_ctpop_i32        0
-#define TCG_TARGET_HAS_brcond2          0
-#define TCG_TARGET_HAS_setcond2         0
 #define TCG_TARGET_HAS_qemu_st8_i32     0
 
 /* 64-bit operations */

tcg/riscv/tcg-target-has.h

@@ -37,8 +37,6 @@
 #define TCG_TARGET_HAS_clz_i32          (cpuinfo & CPUINFO_ZBB)
 #define TCG_TARGET_HAS_ctz_i32          (cpuinfo & CPUINFO_ZBB)
 #define TCG_TARGET_HAS_ctpop_i32        (cpuinfo & CPUINFO_ZBB)
-#define TCG_TARGET_HAS_brcond2          1
-#define TCG_TARGET_HAS_setcond2         1
 #define TCG_TARGET_HAS_qemu_st8_i32     0
 
 #define TCG_TARGET_HAS_negsetcond_i64   1