revert last commit with latest date changes

Author: mssfang

openai-java-core/src/main/kotlin/com/openai/azure/AzureOpenAIServiceVersion.kt

@@ -1,19 +1,12 @@
 package com.openai.azure
 
-import java.time.LocalDate
-import java.time.format.DateTimeFormatter
 import java.util.concurrent.ConcurrentHashMap
 
 class AzureOpenAIServiceVersion private constructor(@get:JvmName("value") val value: String) {
 
     companion object {
         private val values: ConcurrentHashMap<String, AzureOpenAIServiceVersion> =
             ConcurrentHashMap()
-        private val dateFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd")
-
-        private fun extractDate(version: String): LocalDate {
-            return LocalDate.parse(version, dateFormatter)
-        }
 
         @JvmStatic
         fun latestStableVersion(): AzureOpenAIServiceVersion {
@@ -27,15 +20,6 @@ class AzureOpenAIServiceVersion private constructor(@get:JvmName("value") val va
             return V2025_01_01_PREVIEW
         }
 
-        @JvmStatic
-        fun latestVersion(): AzureOpenAIServiceVersion {
-            val stableVersion = latestStableVersion()
-            val previewVersion = latestPreviewVersion()
-            val stableDate = extractDate(stableVersion.value)
-            val previewDate = extractDate(previewVersion.value.substring(0, 10))
-            return if (stableDate.isAfter(previewDate)) stableVersion else previewVersion
-        }
-
         @JvmStatic
         fun fromString(version: String): AzureOpenAIServiceVersion =
             values.computeIfAbsent(version) { AzureOpenAIServiceVersion(version) }

openai-java-core/src/main/kotlin/com/openai/core/ClientOptions.kt

@@ -262,7 +262,7 @@ private constructor(
                 // specific a service API version in 'queryParams'.
                 replaceQueryParams(
                     "api-version",
-                    (azureServiceVersion ?: AzureOpenAIServiceVersion.latestVersion()).value,
+                    (azureServiceVersion ?: AzureOpenAIServiceVersion.latestStableVersion()).value
                 )
             }