Remove support for ARMv7 (32-bit) on iOS

All iOS devices since the iPhone 5S support ARMv8 (64-bit).

The last iOS version supported on ARMv7 devices is 10.x, which is
too old to run Godot 4.0 projects since the minimum supported
iOS version is 11.0.

modules/gdnative/gdnative_library_editor_plugin.cpp

@@ -315,7 +315,6 @@ GDNativeLibraryEditor::GDNativeLibraryEditor() {
 
 		NativePlatformConfig platform_ios;
 		platform_ios.name = "iOS";
-		platform_ios.entries.push_back("armv7");
 		platform_ios.entries.push_back("arm64");
 		platform_ios.entries.push_back("x86_64");
 		// iOS can use both Static and Dynamic libraries.

modules/mono/editor/GodotTools/GodotTools/Export/AotBuilder.cs

@@ -537,7 +537,6 @@ MONO_AOT_MODE_LAST = 1000,
         {
             var iosArchs = new[]
             {
-                "armv7",
                 "arm64"
             };