arc: remove #ifndef CONFIG_AS_CFI_SIGNAL_FRAME

CONFIG_AS_CFI_SIGNAL_FRAME is never defined for ARC.

Suggested-by: Nick Desaulniers <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

Author: masahir0y

arch/arc/kernel/unwind.c

@@ -1178,11 +1178,9 @@ int arc_unwind(struct unwind_frame_info *frame)
 #endif
 
 	/* update frame */
-#ifndef CONFIG_AS_CFI_SIGNAL_FRAME
 	if (frame->call_frame
 	    && !UNW_DEFAULT_RA(state.regs[retAddrReg], state.dataAlign))
 		frame->call_frame = 0;
-#endif
 	cfa = FRAME_REG(state.cfa.reg, unsigned long) + state.cfa.offs;
 	startLoc = min_t(unsigned long, UNW_SP(frame), cfa);
 	endLoc = max_t(unsigned long, UNW_SP(frame), cfa);