comp: remove CBE guards for aro

Author: ehaas

src/Compilation.zig

@@ -4038,7 +4038,6 @@ pub fn cImport(comp: *Compilation, c_src: []const u8) !CImportResult {
         }
         var tree = switch (comp.c_frontend) {
             .aro => tree: {
-                if (builtin.zig_backend == .stage2_c) @panic("the CBE cannot compile Aro yet!");
                 const translate_c = @import("aro_translate_c.zig");
                 _ = translate_c;
                 if (true) @panic("TODO");

src/main.zig

@@ -4282,7 +4282,6 @@ fn cmdTranslateC(comp: *Compilation, arena: Allocator, fancy_output: ?*Compilati
 
         var tree = switch (comp.c_frontend) {
             .aro => tree: {
-                if (builtin.zig_backend == .stage2_c) @panic("the CBE cannot compile Aro yet!");
                 const translate_c = @import("aro_translate_c.zig");
                 var aro_comp = translate_c.Compilation.init(comp.gpa);
                 defer aro_comp.deinit();