Restrict archs to 64-bit

Resolves "Too many symbol files" issue with ITC upload.

PIA VPN.xcodeproj/project.pbxproj

@@ -1857,6 +1857,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -1906,7 +1907,6 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_VERSION = 4.0;
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
@@ -1914,6 +1914,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -1957,7 +1958,6 @@
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 4.0;
 				VALIDATE_PRODUCT = YES;
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};