gdk: gir: remove explicit manual for PixBuf

They are now detected as such by gir.

Author: fengalin

gdk-pixbuf/Gir.toml

@@ -37,12 +37,6 @@ manual = [
 [[object]]
 name = "GdkPixbuf.Pixbuf"
 status = "generate"
-    [[object.function]]
-    name = "get_pixels"
-    #manual array without length
-    manual = true
-    # docs were manually written to include a section on safety
-    generate_doc = false
     [[object.function]]
     name = "get_pixels_with_length"
     #manual as get_pixels