Revert "Temporarily add method to get java binary tool"

Java binaries and cc binaries are in the same directory again, the
separate method can be removed.

Bug: 204136549
Test: m checkbuild
Change-Id: I2e7ca82448aba5c7e54d3c3c376fe14a953ef4af
diff --git a/java/config/config.go b/java/config/config.go
index 92d49a6..30c6f91 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -124,8 +124,8 @@
 	pctx.HostBinToolVariable("Zip2ZipCmd", "zip2zip")
 	pctx.HostBinToolVariable("ZipSyncCmd", "zipsync")
 	pctx.HostBinToolVariable("ApiCheckCmd", "apicheck")
-	pctx.HostJavaBinToolVariable("D8Cmd", "d8")
-	pctx.HostJavaBinToolVariable("R8Cmd", "r8-compat-proguard")
+	pctx.HostBinToolVariable("D8Cmd", "d8")
+	pctx.HostBinToolVariable("R8Cmd", "r8-compat-proguard")
 	pctx.HostBinToolVariable("HiddenAPICmd", "hiddenapi")
 	pctx.HostBinToolVariable("ExtractApksCmd", "extract_apks")
 	pctx.VariableFunc("TurbineJar", func(ctx android.PackageVarContext) string {