evas: parameter length is not used, so removing it. to fix static analyzer tool warning.

Reviewers: raster, cedric

Subscribers: jpeg, rajeshps

Differential Revision: https://phab.enlightenment.org/D5301

Signed-off-by: Cedric Bail <cedric@osg.samsung.com>

src/bin/evas/evas_cserve2_slave.c

@@ -23,7 +23,6 @@ static Eina_Prefix *pfx = NULL;
 
 struct ext_loader_s
 {
-   unsigned int length;
    const char *extension;
    const char *loader;
 };