Delete mac_alias patch

The patch Bitcoin Core has been maintaining for mac_alias was pulled by the mac_alias maintainer in commit 4f31cb084c1c6a8626128b0b00842020b6db9037. Delete the patch and remove the patch from the depends system.

Note that this PR won't be complete until a new version of mac_alias containing the path has been released, and the depends system is updated to reflect the new version.

depends/patches/native_mac_alias/python3.patch

@@ -1,56 +0,0 @@
-diff -dur a/mac_alias/alias.py b/mac_alias/alias.py
---- a/mac_alias/alias.py
-+++ b/mac_alias/alias.py
-@@ -258,10 +258,10 @@
-         alias = Alias()
-         alias.appinfo = appinfo
-             
--        alias.volume = VolumeInfo (volname.replace('/',':'),
-+        alias.volume = VolumeInfo (volname.decode().replace('/',':'),
-                                    voldate, fstype, disktype,
-                                    volattrs, volfsid)
--        alias.target = TargetInfo (kind, filename.replace('/',':'),
-+        alias.target = TargetInfo (kind, filename.decode().replace('/',':'),
-                                    folder_cnid, cnid,
-                                    crdate, creator_code, type_code)
-         alias.target.levels_from = levels_from
-@@ -276,9 +276,9 @@
-                 b.read(1)
- 
-             if tag == TAG_CARBON_FOLDER_NAME:
--                alias.target.folder_name = value.replace('/',':')
-+                alias.target.folder_name = value.decode().replace('/',':')
-             elif tag == TAG_CNID_PATH:
--                alias.target.cnid_path = struct.unpack(b'>%uI' % (length // 4),
-+                alias.target.cnid_path = struct.unpack('>%uI' % (length // 4),
-                                                            value)
-             elif tag == TAG_CARBON_PATH:
-                 alias.target.carbon_path = value
-@@ -313,9 +313,9 @@
-                 alias.target.creation_date \
-                     = mac_epoch + datetime.timedelta(seconds=seconds)
-             elif tag == TAG_POSIX_PATH:
--                alias.target.posix_path = value
-+                alias.target.posix_path = value.decode()
-             elif tag == TAG_POSIX_PATH_TO_MOUNTPOINT:
--                alias.volume.posix_path = value
-+                alias.volume.posix_path = value.decode()
-             elif tag == TAG_RECURSIVE_ALIAS_OF_DISK_IMAGE:
-                 alias.volume.disk_image_alias = Alias.from_bytes(value)
-             elif tag == TAG_USER_HOME_LENGTH_PREFIX:
-@@ -467,12 +467,12 @@
- 
-         b.write(struct.pack(b'>hhQhhQ',
-                 TAG_HIGH_RES_VOLUME_CREATION_DATE,
--                8, long(voldate * 65536),
-+                8, int(voldate * 65536),
-                 TAG_HIGH_RES_CREATION_DATE,
--                8, long(crdate * 65536)))
-+                8, int(crdate * 65536)))
- 
-         if self.target.cnid_path:
--            cnid_path = struct.pack(b'>%uI' % len(self.target.cnid_path),
-+            cnid_path = struct.pack('>%uI' % len(self.target.cnid_path),
-                                     *self.target.cnid_path)
-             b.write(struct.pack(b'>hh', TAG_CNID_PATH,
-                                  len(cnid_path)))