Remove dependency on framework.jar

Remove dependency on framework.jar to reduce the build time. So sdk
libraries are not checked API whenever frameowkr.jar changes.

Test: m -j
Bug: 119625999
Change-Id: I7435c429b7857de8c3c1834757c54888091753e5
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 9cde189..8e0a62a 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -626,7 +626,7 @@
 		case libTag:
 			switch dep := module.(type) {
 			case Dependency:
-				deps.classpath = append(deps.classpath, dep.ImplementationJars()...)
+				deps.classpath = append(deps.classpath, dep.HeaderJars()...)
 			case SdkLibraryDependency:
 				sdkVersion := j.sdkVersion()
 				linkType := javaSdk