.travis.yml: do not test false negatives

Do not test with shrplib and PUREPERL_ONLY - it seems to fail when installing
dependencies and needs some extra love to handle infrastructure.

Maybe later ...

Signed-off-by: Jens Rehsack <[email protected]>

Author: rehsack

.travis.yml

@@ -30,10 +30,6 @@ matrix:
       env: PERL_MM_OPT="PUREPERL_ONLY=1"
     - perl: "5.26"
       env: PERL_MM_OPT="PUREPERL_ONLY=1"
-    - perl: "5.26-shrplib"
-      env: PERL_MM_OPT="PUREPERL_ONLY=1"
-    - perl: "5.24-shrplib"
-      env: PERL_MM_OPT="PUREPERL_ONLY=1"
     - perl: "5.18"
       env: PERL_MM_OPT="PUREPERL_ONLY=1"
     - perl: "5.14"