configure.ac: remove unused AM_CONDITIONAL expressions
configure.ac: remove unused AM_CONDITIONAL expressions

* configure.ac (AM_CONDITIONAL): Remove I386, X86_64, X32.

geofft/strace,kapdop/android_external_strace,kapdop/android_external_strace,Distrotech/strace,vrastogi/strace,Saruta/strace,Yu-AndroidM/android_external_strace,Infinitive-OS/platform_external_strace,bigzz/strace_android,AOSP-YU/platform_external_strace,geofft/strace,cuviper/strace,vrastogi/strace,geofft/strace,Distrotech/strace,YUPlayGodDev/platform_external_strace,Yu-AndroidM/android_external_strace,bnoordhuis/strace,geofft/strace,geekboxzone/mmallow_external_strace,bigzz/strace_android,TeamExodus/external_strace,Yu-AndroidM/android_external_strace,Infinitive-OS/platform_external_strace,MonkeyZZZZ/platform_external_strace,MonkeyZZZZ/platform_external_strace,Distrotech/strace,MonkeyZZZZ/platform_external_strace,TeamExodus/external_strace,geekboxzone/mmallow_external_strace,AOSP-YU/platform_external_strace,AOSP-YU/platform_external_strace,bnoordhuis/strace,YUPlayGodDev/platform_external_strace,Infinitive-OS/platform_external_strace,AOSP-YU/platform_external_strace,MonkeyZZZZ/platform_external_strace,Saruta/strace,TeamExodus/external_strace,cuviper/strace,Yu-AndroidM/android_external_strace,cuviper/strace,bigzz/strace_android,Saruta/strace,geekboxzone/mmallow_external_strace,bnoordhuis/strace,vrastogi/strace,geekboxzone/mmallow_external_strace,TeamExodus/external_strace,bigzz/strace_android,bnoordhuis/strace,Yu-AndroidM/android_external_strace,cuviper/strace,bigzz/strace_android,YUPlayGodDev/platform_external_strace,Distrotech/strace,geekboxzone/mmallow_external_strace,kapdop/android_external_strace,Saruta/strace,TeamExodus/external_strace,kapdop/android_external_strace,YUPlayGodDev/platform_external_strace,Infinitive-OS/platform_external_strace,Saruta/strace,cuviper/strace,vrastogi/strace,AOSP-YU/platform_external_strace,kapdop/android_external_strace,vrastogi/strace,Distrotech/strace,MonkeyZZZZ/platform_external_strace,geofft/strace,YUPlayGodDev/platform_external_strace,Infinitive-OS/platform_external_strace