remove php 5.3 tests, cause it is not supported anymore

dpfaffenbauer · dpfaffenbauer · commit 12d4eef59a3d · 2018-01-10T14:39:40.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 5.3
   - 5.4
   - 5.5
   - 5.6

-Original file line number
+Diff line change
@@ @@ -1,7 +1,6 @@ @@
 language: php
 php:
 -  - 5.3
   - 5.4
   - 5.5
   - 5.6