elm: Don't allow FontProperties to be freed manually

This could easily lead to segfaults and double frees if the lifetime of the Python object is not managed carefully.

We now do the free automatically when the object no longer has references to it.

efl/elementary/__init__.pyx

@@ -854,6 +854,10 @@ cdef class FontProperties(object):
 
     cdef Elm_Font_Properties *efp
 
+    def __dealloc__(self):
+        elm_font_properties_free(self.efp)
+        self.efp = NULL
+
     property name:
         """:type: unicode"""
         def __set__(self, value):
@@ -1045,9 +1049,13 @@ def font_properties_free(FontProperties fp):
 
     .. versionadded:: 1.8
 
+    .. versionchanged:: 1.19
+
+        Changed to no-op as we now do the free automatically when there are
+        no more references to the FontProperties object
+
     """
-    elm_font_properties_free(fp.efp)
-    Py_DECREF(fp)
+    pass
 
 def font_fontconfig_name_get(font_name, style = None):
     """Translate a font name, bound to a style, into fontconfig's font names