drop unnecessary parentheses usage for __reduce__

Author: radhermit

src/pkgcraft/atom/base.pyx

@@ -180,7 +180,7 @@ cdef class Cpv:
 
     def __reduce__(self):
         """Support pickling Cpv objects."""
-        return (self.__class__, (str(self),))
+        return self.__class__, (str(self),)
 
     # TODO: move to __del__() when migrating to >=cython-3 since it's not
     # supported in <cython-3 for cdef classes:

src/pkgcraft/atom/version.pyx

@@ -104,7 +104,7 @@ cdef class Version:
         return self._hash
 
     def __reduce__(self):
-        return (self.__class__, (str(self),))
+        return self.__class__, (str(self),)
 
     # TODO: move to __del__() when migrating to >=cython-3 since it's not
     # supported in <cython-3 for cdef classes:

src/pkgcraft/eapi.pyx

@@ -178,4 +178,4 @@ cdef class Eapi(_IndirectInit):
         return self._hash
 
     def __reduce__(self):
-        return (eapi_from_obj, (self._id,))
+        return eapi_from_obj, (self._id,)