fix: count advancemame's sets at its new pin

AdvanceMameOnEmuELEC counted the 29 sets of 799060b. At 0f6a767 the
profile has 26 (aleck64, atarisy1, cedmag and coh1002v leave, hng64
joins), placed in roms/mame and roms/arcade: 52 entries.

tests/test_launcher_placement.py

@@ -986,12 +986,12 @@ class AdvanceMameOnEmuELEC(unittest.TestCase):
         # read in both.
         view = standalone_view("advancemame", "emuelec")
         sets = [e for e in view["files"] if e.get("category") == "bios_zip"]
-        self.assertEqual(len(sets), 58)
+        self.assertEqual(len(sets), 52)
         places: dict[str, set[str]] = {}
         for entry in sets:
             self.assertTrue(entry.get("unprefixed"))
             places.setdefault(entry["name"], set()).add(entry["standalone_path"])
-        self.assertEqual(len(places), 29)
+        self.assertEqual(len(places), 26)
         for name, paths in places.items():
             self.assertEqual(paths, {"mame/" + name, "arcade/" + name})
 
@@ -1018,7 +1018,7 @@ class AdvanceMameOnEmuELEC(unittest.TestCase):
         by_dest = {f["dest"]: advancemame_copy(f) for f in manifest["files"]}
         sets = [d.removeprefix("arcade/") for d, sha1 in by_dest.items()
                 if d.startswith("arcade/") and sha1]
-        self.assertEqual(len(sets), 29)
+        self.assertEqual(len(sets), 26)
         for name in sets:
             self.assertEqual(by_dest["arcade/" + name], by_dest["mame/" + name], name)