Update .travis.yml

Author: bahusoid

.travis.yml

@@ -31,7 +31,7 @@ before_install:
       wget -O Firebird-3.0.5.33220-0.amd64.tar.gz "https://github.com/FirebirdSQL/firebird/releases/download/R3_0_5/Firebird-3.0.5.33220-0.amd64.tar.gz"
       tar xzvf Firebird-3.0.5.33220-0.amd64.tar.gz
       pushd Firebird-3.0.5.33220-0.amd64
-      sudo ./install.sh -silent   
+      sudo ./install.sh
       popd
       export $(sudo cat /opt/firebird/SYSDBA.password | grep -v ^# | xargs)
       sudo chmod 775 /tmp/firebird