chore: remove use of AXAPIEnabled() (#17)

Function AXAPIEnabled() has been deprecated, and apparently removed at or before MacOS 12.3.
The code already checks for the presence of its replacement, AXIsProcessTrustedWithOptions().
With this change, only AXIsProcessTrustedWithOptions() is reference.

AppGrid/SDAccessibility.m

@@ -1,6 +1,6 @@
 #import "SDAccessibility.h"
 
-extern Boolean AXIsProcessTrustedWithOptions(CFDictionaryRef options) __attribute__((weak_import));
+extern Boolean AXIsProcessTrustedWithOptions(CFDictionaryRef options);
 extern CFStringRef kAXTrustedCheckOptionPrompt __attribute__((weak_import));
 
 @implementation SDAccessibility
@@ -18,20 +18,11 @@ - (void) recache {
 }
 
 + (BOOL) isEnabled {
-    if (AXIsProcessTrustedWithOptions != NULL)
-        return AXIsProcessTrustedWithOptions(NULL);
-    else
-        return AXAPIEnabled();
+    return AXIsProcessTrustedWithOptions(NULL);
 }
 
 + (void) openPanel {
-    if (AXIsProcessTrustedWithOptions != NULL) {
-        AXIsProcessTrustedWithOptions((__bridge CFDictionaryRef)@{(__bridge id)kAXTrustedCheckOptionPrompt: @YES});
-    }
-    else {
-        static NSString* script = @"tell application \"System Preferences\"\nactivate\nset current pane to pane \"com.apple.preference.universalaccess\"\nend tell";
-        [[[NSAppleScript alloc] initWithSource:script] executeAndReturnError:nil];
-    }
+    AXIsProcessTrustedWithOptions((__bridge CFDictionaryRef)@{(__bridge id)kAXTrustedCheckOptionPrompt: @YES});
 }
 
 + (instancetype) singleton {