Accept Xcode 16’s recommended settings

(TIL you can get Xcode to re-show you the suggestions by selecting the
project in the Project Navigator and choosing Editor → Validate
Settings.)

.swiftpm/xcode/xcshareddata/xcschemes/AblyChat.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1540"
+   LastUpgradeVersion = "1600"
    version = "1.7">
    <BuildAction
       parallelizeBuildables = "YES"

Example/AblyChatExample.xcodeproj/project.pbxproj

@@ -123,7 +123,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = 1;
 				LastSwiftUpdateCheck = 1540;
-				LastUpgradeCheck = 1540;
+				LastUpgradeCheck = 1600;
 				TargetAttributes = {
 					21F09A9B2C60CAF00025AF73 = {
 						CreatedOnToolsVersion = 15.4;
@@ -209,6 +209,7 @@
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
@@ -274,6 +275,7 @@
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
@@ -304,6 +306,7 @@
 				CODE_SIGN_ENTITLEMENTS = AblyChatExample/AblyChatExample.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_ASSET_PATHS = "\"AblyChatExample/Preview Content\"";
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
@@ -343,6 +346,7 @@
 				CODE_SIGN_ENTITLEMENTS = AblyChatExample/AblyChatExample.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_ASSET_PATHS = "\"AblyChatExample/Preview Content\"";
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;