BUILD: travis-ci: no more allowed failures for openssl-1.0.2

since 23fb037 (which fixes #429) no need to allow failures
on openssl-1.0.2
diff --git a/.travis.yml b/.travis.yml
index a82c273..1cce8db 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -92,12 +92,6 @@
     before_script:
       - git clone http://git.1wt.eu/git/libslz.git/
       - cd libslz && make && make PREFIX=${HOME}/opt install && cd ..
-  allow_failures:
-  - os: linux
-    arch: ppc64le
-    if: type == cron
-    compiler: gcc
-    env: TARGET=linux-glibc OPENSSL_VERSION=1.0.2u
 
 install:
   - git clone https://github.com/VTest/VTest.git ../vtest