Do not exclude arm64 simulators

The "project.pbxproj" file was being updated by team members running
on x86_64 and arm64 as the file was being changed based on their
hw.optional.arm64 value.

Xcode 12.4 and on (at least, couldn't test on older versions) properly
handle builds on both x86_64 and arm64.

packages/rn-tester/RNTesterPods.xcodeproj/project.pbxproj

@@ -871,7 +871,7 @@
 				ENABLE_BITCODE = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
-				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "arm64 ";
+				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "";
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
@@ -955,7 +955,7 @@
 				ENABLE_BITCODE = NO;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "arm64 ";
+				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "";
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_TREAT_INCOMPATIBLE_POINTER_TYPE_WARNINGS_AS_ERRORS = YES;

scripts/react_native_pods.rb

@@ -127,18 +127,12 @@ def exclude_architectures(installer)
     .uniq{ |p| p.path }
     .push(installer.pods_project)
 
-  arm_value = `/usr/sbin/sysctl -n hw.optional.arm64 2>&1`.to_i
-
   # Hermes does not support `i386` architecture
   excluded_archs_default = has_pod(installer, 'hermes-engine') ? "i386" : ""
 
   projects.each do |project|
     project.build_configurations.each do |config|
-      if arm_value == 1 then
-        config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = excluded_archs_default
-      else
-        config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64 " + excluded_archs_default
-      end
+      config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = excluded_archs_default
     end
 
     project.save()