hamcrest#331 Removed Java 1.7 from Travis build

.travis.yml

@@ -2,25 +2,12 @@ language: java
 
 os: linux
 
-# Need to select an older Ubuntu distribution that supports JDK7
-dist: trusty
-
 jdk:
-  - openjdk7
   - oraclejdk8
   - openjdk8
   - oraclejdk9
   - openjdk11
   - openjdk14
 
-# Workaround to using openjdk7 with Gradle due to security issue:
-# https://github.com/gradle/gradle/issues/2421
-before_install:
-- BCPROV_FILENAME=bcprov-ext-jdk15on-158.jar
-- wget "https://bouncycastle.org/download/${BCPROV_FILENAME}"
-- sudo mv $BCPROV_FILENAME /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/ext
-- sudo perl -pi.bak -e 's/^(security\.provider\.)([0-9]+)/$1.($2+1)/ge' /etc/java-7-openjdk/security/java.security
-- echo "security.provider.1=org.bouncycastle.jce.provider.BouncyCastleProvider" | sudo tee -a /etc/java-7-openjdk/security/java.security
-
 script:
   - ./gradlew clean build javadoc