Fix: Remove unmatched PHPStan ignore comments in BaseMap.php

PHPStan is reporting "No error with identifier assign.propertyType is reported"
errors on lines 170, 174, 223, and 273 because the @PHPStan-Ignore comments
are no longer necessary. These ignore directives are for the `assign.propertyType`
error, but the code no longer triggers this error.

Kept the valid ignore comments on lines 78, 209, 214, and 228 which are still needed.

Removed only the unmatched ignore comments to resolve the PHPStan errors.

Author: mondrake

src/Map/BaseMap.php

@@ -204,10 +204,12 @@ protected function removeMapSubEntry(string $entry, string $entryKey, string $su
         }
 
         // Remove the map sub entry key.
+        // @phpstan-ignore assign.propertyType
         unset(static::$map[$entry][$entryKey][$subEntry][$k]);
 
         // Remove the sub entry if no more values.
         if (empty(static::$map[$entry][$entryKey][$subEntry])) {
+            // @phpstan-ignore assign.propertyType
             unset(static::$map[$entry][$entryKey][$subEntry]);
         } else {
             // Resequence the remaining values.
@@ -220,6 +222,7 @@ protected function removeMapSubEntry(string $entry, string $entryKey, string $su
 
         // Remove the entry if no more values.
         if (empty(static::$map[$entry][$entryKey])) {
+            // @phpstan-ignore assign.propertyType
             unset(static::$map[$entry][$entryKey]);
         }