removed unnecessary direct dependencies

Author: frsyuki

digdag-core/build.gradle

@@ -5,8 +5,6 @@ dependencies {
     compile project(':digdag-plugin-utils')
     compile project(':digdag-guice-rs-server')
 
-    compile 'com.google.inject.extensions:guice-multibindings:4.0'
-    compile 'org.embulk:guice-bootstrap:0.2.1'
     compile "com.fasterxml.jackson.module:jackson-module-guice:${project.ext.jacksonVersion}"
     compile "com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:${project.ext.jacksonVersion}"
     compile 'org.jdbi:jdbi:2.75'

digdag-guice-rs-server-undertow/build.gradle

@@ -3,6 +3,7 @@ dependencies {
     compile project(':digdag-guice-rs-server')
 
     compile 'io.undertow:undertow-servlet:1.4.0.Final'
-    compile 'org.jboss.logging:jboss-logging:3.3.0.Final'
+
+    // for json log formatter
     compile "com.fasterxml.jackson.core:jackson-core:${project.ext.jacksonVersion}"
 }