include: stop breaking the compilation of OOT architectures

Zephyr support out-of-tree architectures so we shouldn't
throw error for archs not listed here.

Signed-off-by: Yong Cong Sin <[email protected]>

Author: ycsin

include/zephyr/arch/arch_inlines.h

@@ -32,8 +32,6 @@
 #include <zephyr/arch/posix/arch_inlines.h>
 #elif defined(CONFIG_SPARC)
 #include <zephyr/arch/sparc/arch_inlines.h>
-#else
-#error "Unknown Architecture"
 #endif
 
 #endif /* ZEPHYR_INCLUDE_ARCH_INLINES_H_ */

include/zephyr/arch/cpu.h

@@ -31,8 +31,6 @@
 #include <zephyr/arch/posix/arch.h>
 #elif defined(CONFIG_SPARC)
 #include <zephyr/arch/sparc/arch.h>
-#else
-#error "Unknown Architecture"
 #endif
 
 #endif /* ZEPHYR_INCLUDE_ARCH_CPU_H_ */