Remove add-imaging-libs option

setup.py

@@ -333,7 +333,6 @@ def __iter__(self):
             ("disable-platform-guessing", None, "Disable platform guessing on Linux"),
             ("debug", None, "Debug logging"),
         ]
-        + [("add-imaging-libs=", None, "Add libs to _imaging build")]
     )
 
     @staticmethod
@@ -344,7 +343,6 @@ def initialize_options(self):
         self.disable_platform_guessing = self.check_configuration(
             "platform-guessing", "disable"
         )
-        self.add_imaging_libs = ""
         build_ext.initialize_options(self)
         for x in self.feature:
             setattr(self, f"disable_{x}", self.check_configuration(x, "disable"))
@@ -821,7 +819,7 @@ def build_extensions(self):
         #
         # core library
 
-        libs = self.add_imaging_libs.split()
+        libs = []
         defs = []
         if feature.tiff:
             libs.append(feature.tiff)