Simplify can_localize logic

Author: Will-Tyler

bio2zarr/vcf2zarr/icf.py

@@ -239,7 +239,6 @@ def scan_vcf(path, target_num_partitions, *, local_alleles):
         # Indicates whether vcf2zarr can introduce local alleles
         can_localize = False
         should_add_laa_field = True
-        has_PL = False
         fields = fixed_vcf_field_definitions()
         for h in vcf.header_iter():
             if h["HeaderType"] in ["INFO", "FORMAT"]:
@@ -249,14 +248,12 @@ def scan_vcf(path, target_num_partitions, *, local_alleles):
                     field.vcf_number = "."
                 fields.append(field)
                 if field.category == "FORMAT":
-                    if field.name in {"GT", "AD", "PL"}:
-                        can_localize = True
                     if field.name == "PL":
-                        has_PL = True
+                        can_localize = True
                     if field.name == "LAA":
                         should_add_laa_field = False
 
-        if local_alleles and can_localize and should_add_laa_field and has_PL:
+        if local_alleles and can_localize and should_add_laa_field:
             laa_field = VcfField(
                 category="FORMAT",
                 name="LAA",