Revert "Add filegroup support to notice property."

This reverts commit ff7a1a47d9.

Reason for revert: Broke ART buildbot

Change-Id: I005ccfcc2c36bbcb274cb2a069fc701168faacd2

android/module.go

@@ -441,7 +441,6 @@ type ModuleBase struct {
 	noAddressSanitizer bool
 	installFiles       Paths
 	checkbuildFiles    Paths
-	noticeFile         Path
 
 	// Used by buildTargetSingleton to create checkbuild and per-directory build targets
 	// Only set on the final variant of each module
@@ -790,11 +789,6 @@ func (a *ModuleBase) GenerateBuildActions(blueprintCtx blueprint.ModuleContext)
 
 		a.installFiles = append(a.installFiles, ctx.installFiles...)
 		a.checkbuildFiles = append(a.checkbuildFiles, ctx.checkbuildFiles...)
-
-		if a.commonProperties.Notice != nil {
-			// For filegroup-based notice file references.
-			a.noticeFile = ctx.ExpandSource(*a.commonProperties.Notice, "notice")
-		}
 	}
 
 	if a == ctx.FinalModule().(Module).base() {