Remove PGP signing from publish task

.circleci/config.yml

@@ -201,16 +201,10 @@ jobs:
     - restore_cache:
         <<: *cache_keys
 
-    - run:
-        name: Decode Signing Key
-        command: echo $PGP_KEY_FILE | base64 --decode > /home/circleci/dd-trace-java/.circleci/secring.gpg
-
     - deploy:
         name: Publish master to Artifactory
         command: |
-          ./gradlew -Psigning.keyId=${PGP_KEY_ID} \
+          ./gradlew \
-            -Psigning.password=${PGP_KEY_PASS} \
-            -Psigning.secretKeyRingFile=/home/circleci/dd-trace-java/.circleci/secring.gpg \
             -PbintrayUser=${BINTRAY_USER} \
             -PbintrayApiKey=${BINTRAY_API_KEY} \
             -PbuildInfo.build.number=${CIRCLE_BUILD_NUM} \

gradle/publish.gradle

@@ -19,7 +19,6 @@
 apply plugin: "maven"
 apply plugin: "com.jfrog.artifactory"
 apply plugin: 'com.jfrog.bintray'
-apply plugin: "signing"
 
 afterEvaluate {
   assert description: "Project $project.path is published, must have a description"
@@ -36,13 +35,6 @@ if (!isRoot) {
   apply from: "$rootDir/gradle/version.gradle"
   apply from: "${rootDir}/gradle/pom.gradle"
 
-  def isCI = Boolean.parseBoolean("$System.env.CI")
-
-  signing {
-    required = isCI
-    sign configurations.archives
-  }
-
   configurations {
     configurations {
       all {