Revert "Implement OS_OSX::execute"

This reverts commit e42576548f2c0ae2c6cb24ce2b0437ffb8978d65.

platform/osx/os_osx.h

@@ -195,7 +195,6 @@ public:
 	virtual VideoMode get_video_mode(int p_screen = 0) const;
 	virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const;
 
-	virtual Error execute(const String &p_path, const List<String> &p_arguments, bool p_blocking, ProcessID *r_child_id, String *r_pipe, int *r_exitcode, bool p_read_stderr);
 	virtual String get_executable_path() const;
 
 	virtual LatinKeyboardVariant get_latin_keyboard_variant() const;

platform/osx/os_osx.mm

@@ -2046,55 +2046,6 @@ bool OS_OSX::get_borderless_window() {
 	return [window_object styleMask] == NSWindowStyleMaskBorderless;
 }
 
-Error OS_OSX::execute(const String &p_path, const List<String> &p_arguments, bool p_blocking, ProcessID *r_child_id, String *r_pipe, int *r_exitcode, bool p_read_stderr) {
-
-	NSTask *task = [[NSTask alloc] init];
-	NSPipe *stdout_pipe = nil;
-	[task setLaunchPath:[NSString stringWithUTF8String:p_path.utf8().get_data()]];
-
-	NSMutableArray *arguments = [[NSMutableArray alloc] initWithCapacity:p_arguments.size()];
-	for (int i = 0; i < p_arguments.size(); i++) {
-		[arguments addObject:[NSString stringWithUTF8String:p_arguments[i].utf8().get_data()]];
-	}
-	[task setArguments:arguments];
-
-	if (p_blocking && r_pipe) {
-		stdout_pipe = [NSPipe pipe];
-		[task setStandardOutput:stdout_pipe];
-		if (p_read_stderr) [task setStandardError:[task standardOutput]];
-	}
-
-	@try {
-		[task launch];
-		if (r_child_id)
-			*r_child_id = [task processIdentifier];
-
-		if (p_blocking) {
-			if (r_pipe) {
-				NSFileHandle *read_handle = [stdout_pipe fileHandleForReading];
-				NSData *data = nil;
-				while ((data = [read_handle availableData]) && [data length]) {
-					NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
-					(*r_pipe) += [string UTF8String];
-					[string release];
-				}
-			} else {
-				[task waitUntilExit];
-			}
-		}
-
-		[arguments release];
-		[task release];
-		return OK;
-	} @catch (NSException *exception) {
-		ERR_PRINTS("NSException: " + String([exception reason].UTF8String) + "; Path: " + p_path);
-
-		[arguments release];
-		[task release];
-		return ERR_CANT_OPEN;
-	}
-}
-
 String OS_OSX::get_executable_path() const {
 
 	int ret;