Remove --experimental_android_use_singlejar_for_multidex.

This flag has been a no-op for a while with a deprecation warning that it will
be removed.

RELNOTES: Remove --experimental_android_use_singlejar_for_multidex.
PiperOrigin-RevId: 162643922

src/main/java/com/google/devtools/build/lib/rules/android/AndroidConfiguration.java

diff --git a/src/main/java/com/google/devtools/build/lib/rules/android/AndroidConfiguration.java b/src/main/java/com/google/devtools/build/lib/rules/android/AndroidConfiguration.java
index 86b850c..4e0e9b6 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/android/AndroidConfiguration.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/android/AndroidConfiguration.java
@@ -598,18 +598,6 @@
     public boolean useSingleJarApkBuilder;
 
     @Option(
-      name = "experimental_android_use_singlejar_for_multidex",
-      defaultValue = "true",
-      metadataTags = {OptionMetadataTag.HIDDEN},
-      deprecationWarning =
-          "This flag is deprecated and is a no-op. It will be removed in a future release.",
-      documentationCategory = OptionDocumentationCategory.UNDOCUMENTED,
-      effectTags = {OptionEffectTag.UNKNOWN},
-      help = "This flag is deprecated and is a no-op. It will be removed in a future release."
-    )
-    public boolean useSingleJarForMultidex;
-
-    @Option(
       name = "experimental_android_resource_filtering_method",
       converter = ResourceFilter.Converter.class,
       defaultValue = "filter_in_execution",