Revert "Use the toolchain from JDK 17"

Revert submission 2164342-use-jdk17

Reason for revert: DroidMonitor-triggered revert due to breakage b/250426490

Reverted Changes:
Ib1a24e7ea:Update path for libjli.so
I3375bd4e4:Use the toolchain from JDK 17
I9183e5511:Use the toolchain from JDK 17

Change-Id: I28fc32290dd337b7d44bb98bc52956ee84f01aaa

java/config/config.go

@@ -132,7 +132,12 @@ func init() {
 		if override := ctx.Config().Getenv("OVERRIDE_JLINK_VERSION_NUMBER"); override != "" {
 			return override
 		}
-		return "17"
+		switch ctx.Config().Getenv("EXPERIMENTAL_USE_OPENJDK17_TOOLCHAIN") {
+		case "true":
+			return "17"
+		default:
+			return "11"
+		}
 	})
 
 	pctx.SourcePathVariable("JavaToolchain", "${JavaHome}/bin")