diff --git a/velox/exec/ExchangeSource.h b/velox/exec/ExchangeSource.h
index e2a199ee57a8..452c8ded9f42 100644
--- a/velox/exec/ExchangeSource.h
+++ b/velox/exec/ExchangeSource.h
@@ -130,17 +130,6 @@ class ExchangeSource : public std::enable_shared_from_this<ExchangeSource> {
     return obj;
   }
 
-  // TODO(jtan6): Remove after presto native toJson implementation
-  virtual std::string toJsonString() {
-    folly::dynamic obj = folly::dynamic::object;
-    obj["taskId"] = taskId_;
-    obj["destination"] = destination_;
-    obj["sequence"] = sequence_;
-    obj["requestPending"] = requestPending_.load();
-    obj["atEnd"] = atEnd_;
-    return folly::toPrettyJson(obj);
-  }
-
   using Factory = std::function<std::shared_ptr<ExchangeSource>(
       const std::string& taskId,
       int destination,
diff --git a/velox/exec/Task.cpp b/velox/exec/Task.cpp
index 7f190247abfa..f6134c941014 100644
--- a/velox/exec/Task.cpp
+++ b/velox/exec/Task.cpp
@@ -2112,16 +2112,6 @@ std::string Task::toString() const {
   return out.str();
 }
 
-// TODO(jtan6): remove after toJson() is landed on presto native side
-std::string Task::toShortJsonString() const {
-  return folly::toPrettyJson(toShortJson());
-}
-
-// TODO(jtan6): remove after toJson() is landed on presto native side
-std::string Task::toJsonString() const {
-  return folly::toPrettyJson(toJson());
-}
-
 folly::dynamic Task::toShortJsonLocked() const {
   folly::dynamic obj = folly::dynamic::object;
   obj["shortId"] = shortId(taskId_);
diff --git a/velox/exec/Task.h b/velox/exec/Task.h
index b4f945a71374..6d3ec629fe94 100644
--- a/velox/exec/Task.h
+++ b/velox/exec/Task.h
@@ -79,10 +79,6 @@ class Task : public std::enable_shared_from_this<Task> {
 
   std::string toString() const;
 
-  std::string toJsonString() const;
-
-  std::string toShortJsonString() const;
-
   folly::dynamic toJson() const;
 
   folly::dynamic toShortJson() const;