Remove hardcoded development team

This will allow consumer of the framework using Xcode 8 to archive and
code sign successfully.

https://twitter.com/_petegoldsmith/status/782778069777997824

Reachability.xcodeproj/project.pbxproj

@@ -435,7 +435,6 @@
 					};
 					AA7344711BE7678B008AFE69 = {
 						CreatedOnToolsVersion = 7.1;
-						DevelopmentTeam = 9APVGUJV73;
 						DevelopmentTeamName = "Joylord Systems Ltd";
 						LastSwiftMigration = 0800;
 						ProvisioningStyle = Automatic;
@@ -892,7 +891,7 @@
 				CLANG_ENABLE_MODULES = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				DEFINES_MODULE = YES;
-				DEVELOPMENT_TEAM = 9APVGUJV73;
+				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
@@ -916,7 +915,7 @@
 				CLANG_ENABLE_MODULES = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				DEFINES_MODULE = YES;
-				DEVELOPMENT_TEAM = 9APVGUJV73;
+				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";