diff --git a/build.xml b/build.xml
index 28ef8db8c0f..3d09e8254b0 100644
--- a/build.xml
+++ b/build.xml
@@ -302,41 +302,6 @@ Build-Date: ${build.tstamp}
         <call-javac-compile-mrjar release="20"/>
         <!-- Java 21 specific files (2023-09 LTS) -->
         <call-javac-compile-mrjar release="21"/>
-        <javac sourcepath="" srcdir="${src.dir}" fork="yes"
-            excludes="com/**,org/apache/commons/**,**/package-info.java"
-            destdir="${build.dir}" release="${java.lang.version}" debug="on" includeantruntime="false" encoding="UTF-8">
-            <compilerarg value="-J-Xbootclasspath/p:${toString:errorprone_javac.classpath}" unless:set="isJava9"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED" if:set="isJava16" unless:set="noErrorProne"/>
-            <compilerarg line="-XDcompilePolicy=simple"/>
-            <compilerarg value="-processorpath"/>
-            <compilerarg pathref="errorprone.classpath"/>
-            <compilerarg value="-Xlint:cast"/>
-            <compilerarg value="-Xlint:deprecation"/>
-            <compilerarg value="-Xlint:dep-ann"/>
-            <compilerarg value="-Xlint:divzero"/>
-            <compilerarg value="-Xlint:empty"/>
-            <compilerarg value="-Xlint:finally"/>
-            <compilerarg value="-Xlint:overrides"/>
-            <!--<compilerarg value="-Xlint:rawtypes"/>-->
-            <compilerarg value="-Xlint:static"/>
-            <compilerarg value="-Xlint:try"/>
-            <compilerarg value="-Xlint:unchecked"/>
-            <!-- Undocumented argument to ignore "Sun internal proprietary API" warning, see http://stackoverflow.com/a/13862308/2257172 -->
-            <compilerarg value="-XDignore.symbol.file"/>
-            <compilerarg value="-Xplugin:ErrorProne -XepExcludedPaths:.*/parsergen/.* -Xep:ReferenceEquality:OFF -Xep:FutureReturnValueIgnored:OFF -Xep:JdkObsolete:OFF -Xep:EqualsGetClass:OFF -Xep:UndefinedEquals:OFF -Xep:BadImport:OFF -Xep:AnnotateFormatMethod:OFF -Xep:JavaUtilDate:OFF -Xep:DoNotCallSuggester:OFF -Xep:BanSerializableRead:OFF -Xep:RestrictedApiChecker:OFF -Xep:InlineMeSuggester:OFF" unless:set="noErrorProne"/>
-            <compilerarg line="-Xmaxwarns 1000"/>
-            <classpath>
-                <path refid="runtime.path"/>
-            </classpath>
-        </javac>
     </target>
     <target name="create-resources" depends="create-revision" description="Create generated resource files">
         <copy todir="${resources.dir}">