extract_utils: remove BpBuilder's get_partition() method

Change-Id: I9ceaa4ebb12e4d93a6055e0e10a276c4f706738c

Author: Demon000

extract_utils/bp_builder.py

@@ -74,10 +74,6 @@ def set_partition(self, partition: str):
         self.__partition = partition
         return self
 
-    def get_partition(self):
-        assert self.__partition is not None
-        return self.__partition
-
     def set_rule_name(self, rule_name: str):
         self.__rule_name = rule_name
         return self

extract_utils/makefiles.py

@@ -197,8 +197,6 @@ def write_elfs_package(
     bitses = []
     depses = []
 
-    partition = builder.get_partition()
-
     for f in files:
         f_path = f'{ctx.vendor_prop_path}/{f.dst}'
 
@@ -207,7 +205,7 @@ def write_elfs_package(
             return write_sh_package(files[0], builder, any_extension=True)
 
         deps = remove_libs_so_ending(libs)
-        deps = run_libs_fixup(ctx.lib_fixups, deps, partition)
+        deps = run_libs_fixup(ctx.lib_fixups, deps, file.partition)
         machines.append(machine)
         bitses.append(bits)
         depses.append(deps)