removed DateTimeFunction used within class.

MitchellGale · MitchellGale · commit 36481448cb14 · 2022-12-18T18:22:35.000-08:00
Signed-off-by: MitchellGale-BitQuill &lt;mitchellg@bitquilltech.com&gt;
diff --git a/core/src/main/java/org/opensearch/sql/expression/datetime/DateTimeFunction.java b/core/src/main/java/org/opensearch/sql/expression/datetime/DateTimeFunction.java
@@ -576,7 +576,7 @@ private FunctionResolver unix_timestamp() {
   private DefaultFunctionResolver utc_date() {
     return define(BuiltinFunctionName.UTC_DATE.getName(),
         implWithProperties(functionProperties
-            -> DateTimeFunction.exprUtcDate(functionProperties), DATE));
+            -> exprUtcDate(functionProperties), DATE));
   }
 
   /**
@@ -585,7 +585,7 @@ private DefaultFunctionResolver utc_date() {
   private DefaultFunctionResolver utc_time() {
     return define(BuiltinFunctionName.UTC_TIME.getName(),
         implWithProperties(functionProperties
-            -> DateTimeFunction.exprUtcTime(functionProperties), TIME));
+            -> exprUtcTime(functionProperties), TIME));
   }
 
   /**
@@ -594,7 +594,7 @@ private DefaultFunctionResolver utc_time() {
   private DefaultFunctionResolver utc_timestamp() {
     return define(BuiltinFunctionName.UTC_TIMESTAMP.getName(),
         implWithProperties(functionProperties
-            -> DateTimeFunction.exprUtcTimeStamp(functionProperties), DATETIME));
+            -> exprUtcTimeStamp(functionProperties), DATETIME));
   }
 
   /**
