Revert "se_compat_cil: Prepend generated files with a header"

This reverts commit b44e5062239977ae76ac89914422727ec5fba2e7.

Reason for revert: secilc is fixed by aosp/1701846, so the workaround is no longer needed

Bug: 183362912
Test: S GSI on R CF boot test
Change-Id: Ic73c7cea1ebe42b483049cbc29f192e738748894
diff --git a/build/soong/compat_cil.go b/build/soong/compat_cil.go
index 5cc73f9..230fdc3 100644
--- a/build/soong/compat_cil.go
+++ b/build/soong/compat_cil.go
@@ -87,15 +87,6 @@
 
 	srcPaths := c.expandSeSources(ctx)
 	out := android.PathForModuleGen(ctx, c.Name())
-
-	// TODO(b/183362912): Patch secilc to handle empty cil files.
-	// Put a header so that the generated cil mustn't be empty.
-	header := android.PathForModuleGen(ctx, c.Name()+"_header")
-	rule := android.NewRuleBuilder(pctx, ctx)
-	rule.Command().Text("echo").Flag(proptools.ShellEscape(";; " + c.stem())).Text(">").Output(header)
-	rule.Build(c.Name()+"_header", "Generate cil header")
-	srcPaths = append(android.Paths{header}, srcPaths...)
-
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        android.Cat,
 		Inputs:      srcPaths,