diff --git a/transport/include/hidl/HidlBinderSupport.h b/transport/include/hidl/HidlBinderSupport.h
index a098805..44a56b4 100644
--- a/transport/include/hidl/HidlBinderSupport.h
+++ b/transport/include/hidl/HidlBinderSupport.h
@@ -28,7 +28,7 @@
 #include <hwbinder/Parcel.h>
 #include <log/log.h>  // TODO(b/65843592): remove. Too many users depending on this transitively.
 
-// Defines functions for hidl_string, hidl_version, Status, hidl_vec, MQDescriptor,
+// Defines functions for hidl_string, Status, hidl_vec, MQDescriptor,
 // etc. to interact with Parcel.
 
 namespace android {
@@ -72,13 +72,6 @@
 status_t writeEmbeddedToParcel(const hidl_string &string,
         Parcel *parcel, size_t parentHandle, size_t parentOffset);
 
-// ---------------------- hidl_version
-
-status_t writeToParcel(const hidl_version &version, android::hardware::Parcel& parcel);
-
-// Caller is responsible for freeing the returned object.
-hidl_version* readFromParcel(const android::hardware::Parcel& parcel);
-
 // ---------------------- Status
 
 // Bear in mind that if the client or service is a Java endpoint, this