patch 9.0.0001: Travis CI is no longer used

Problem:    Travis CI is no longer used.
Solution:   Delete the Travis CI configuration. (Hugo Osvaldo Barrera,
            closes #10636)

Author: brammool

.travis.yml

@@ -735,6 +735,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1,
 /**/
     0
 };