Quiet unzip output for travis (capstone-engine#1321)

Author: catenacyber

.travis.yml

@@ -4,7 +4,7 @@ before_install:
         - export LD_LIBRARY_PATH=`pwd`/tests/:$LD_LIBRARY_PATH
 before_script:
         - wget https://github.com/groundx/capstonefuzz/raw/master/corpus/corpus-libFuzzer-capstone_fuzz_disasmnext-latest.zip
-        - unzip corpus-libFuzzer-capstone_fuzz_disasmnext-latest.zip -d suite/fuzz
+        - unzip -q corpus-libFuzzer-capstone_fuzz_disasmnext-latest.zip -d suite/fuzz
 script:
         - ./make.sh
         - make check