fix: Release設定からCODE_SIGN_IDENTITYを削除

Automatic signingと競合するため、明示的なCODE_SIGN_IDENTITYを削除

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: YumNumm

app/ios/Runner.xcodeproj/project.pbxproj

@@ -710,7 +710,6 @@
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
 				CODE_SIGN_ENTITLEMENTS = WidgetExtension.entitlements;
-				CODE_SIGN_IDENTITY = "Apple Distribution";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
@@ -847,7 +846,6 @@
 				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = "$(inherited)";
 				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
 				CODE_SIGN_ENTITLEMENTS = FcmServiceExtension/FcmServiceExtension.entitlements;
-				CODE_SIGN_IDENTITY = "Apple Distribution";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1287;
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
@@ -1078,7 +1076,6 @@
 				ASSETCATALOG_COMPILER_INCLUDE_ALL_APPICON_ASSETS = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1287;
 				DEVELOPMENT_TEAM = CPL7H8SHVM;