diff --git a/java/dexpreopt_config.go b/java/dexpreopt_config.go
index 117b660..76c78cb 100644
--- a/java/dexpreopt_config.go
+++ b/java/dexpreopt_config.go
@@ -44,8 +44,6 @@
 	bootImageConfigRawKey  = android.NewOnceKey("bootImageConfigRaw")
 	artBootImageName       = "art"
 	frameworkBootImageName = "boot"
-	mainlineBootImageName  = "mainline"
-	bootImageStem          = "boot"
 )
 
 func genBootImageConfigRaw(ctx android.PathContext) map[string]*bootImageConfig {
@@ -54,16 +52,14 @@
 
 		artModules := global.ArtApexJars
 		frameworkModules := global.BootJars.RemoveList(artModules)
-		mainlineBcpModules := global.ApexBootJars
-		frameworkSubdir := "system/framework"
 
 		// ART config for the primary boot image in the ART apex.
 		// It includes the Core Libraries.
 		artCfg := bootImageConfig{
 			name:                     artBootImageName,
-			stem:                     bootImageStem,
+			stem:                     "boot",
 			installDirOnHost:         "apex/art_boot_images/javalib",
-			installDirOnDevice:       frameworkSubdir,
+			installDirOnDevice:       "system/framework",
 			profileInstallPathInApex: "etc/boot-image.prof",
 			modules:                  artModules,
 			preloadedClassesFile:     "art/build/boot/preloaded-classes",
@@ -72,10 +68,11 @@
 
 		// Framework config for the boot image extension.
 		// It includes framework libraries and depends on the ART config.
+		frameworkSubdir := "system/framework"
 		frameworkCfg := bootImageConfig{
 			extends:              &artCfg,
 			name:                 frameworkBootImageName,
-			stem:                 bootImageStem,
+			stem:                 "boot",
 			installDirOnHost:     frameworkSubdir,
 			installDirOnDevice:   frameworkSubdir,
 			modules:              frameworkModules,
@@ -83,20 +80,9 @@
 			compilerFilter:       "speed-profile",
 		}
 
-		mainlineCfg := bootImageConfig{
-			extends:            &frameworkCfg,
-			name:               mainlineBootImageName,
-			stem:               bootImageStem,
-			installDirOnHost:   frameworkSubdir,
-			installDirOnDevice: frameworkSubdir,
-			modules:            mainlineBcpModules,
-			compilerFilter:     "verify",
-		}
-
 		return map[string]*bootImageConfig{
 			artBootImageName:       &artCfg,
 			frameworkBootImageName: &frameworkCfg,
-			mainlineBootImageName:  &mainlineCfg,
 		}
 	}).(map[string]*bootImageConfig)
 }
@@ -188,10 +174,6 @@
 	return genBootImageConfigs(ctx)[frameworkBootImageName]
 }
 
-func mainlineBootImageConfig(ctx android.PathContext) *bootImageConfig {
-	return genBootImageConfigs(ctx)[mainlineBootImageName]
-}
-
 // Apex boot config allows to access build/install paths of apex boot jars without going
 // through the usual trouble of registering dependencies on those modules and extracting build paths
 // from those dependencies.