Reland "Target Java 17"

This reverts commit 384250c7c45c01f474b0e941890382e6d097cca2.

Reason for revert: Relanding the feature.

Bug: 233029164
Change-Id: Ib66deabbf6e9604798c70edaf581f46db848e6ca
diff --git a/java/java.go b/java/java.go
index 3b0ad8d..6e428cb 100644
--- a/java/java.go
+++ b/java/java.go
@@ -510,14 +510,8 @@
 		return normalizeJavaVersion(ctx, javaVersion)
 	} else if ctx.Device() {
 		return defaultJavaLanguageVersion(ctx, sdkContext.SdkVersion(ctx))
-	} else if ctx.Config().TargetsJava17() {
-		// Temporary experimental flag to be able to try and build with
-		// java version 17 options.  The flag, if used, just sets Java
-		// 17 as the default version, leaving any components that
-		// target an older version intact.
-		return JAVA_VERSION_17
 	} else {
-		return JAVA_VERSION_11
+		return JAVA_VERSION_17
 	}
 }