removed env variables from build

Author: jruaux

build.gradle

@@ -43,8 +43,8 @@ test {
 }
 
 bintray {
-    user = project.hasProperty('bintrayUser') ? project.property('bintrayUser') : System.getenv('BINTRAY_USER')
-    key = project.hasProperty('bintrayKey') ? project.property('bintrayKey') : System.getenv('BINTRAY_API_KEY')
+    user = project.hasProperty('bintrayUser') ? project.property('bintrayUser') : ''
+    key = project.hasProperty('bintrayKey') ? project.property('bintrayKey') : ''
     publications = ['mavenJava']
     publish = true
     pkg {
@@ -58,8 +58,8 @@ bintray {
 	        }
 	        mavenCentralSync {
 	            sync = true
-	            user = project.hasProperty('ossrhUsername') ? project.property('ossrhUsername') : System.getenv('OSSRH_USER')
-	            password = project.hasProperty('ossrhPassword') ? project.property('ossrhPassword') : System.getenv('OSSRH_PASSWORD')
+	            user = project.hasProperty('ossrhUsername') ? project.property('ossrhUsername') : ''
+	            password = project.hasProperty('ossrhPassword') ? project.property('ossrhPassword') : ''
 	        }
 	    }
     }