cmd/compile/internal/gc: remove unused parameter to importfile

Change-Id: Icf69862554d0121ec24e3c162d5c48630a03b99a
Reviewed-on: https://go-review.googlesource.com/38583Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/compile/internal/gc/main.go

@@ -745,7 +745,7 @@ func loadsys() {
 	inimport = false
 }
 
-func importfile(f *Val, indent []byte) *Pkg {
+func importfile(f *Val) *Pkg {
 	path_, ok := f.U.(string)
 	if !ok {
 		yyerror("import path must be a string")

src/cmd/compile/internal/gc/noder.go

@@ -136,7 +136,7 @@ func (p *noder) decls(decls []syntax.Decl) (l []*Node) {
 
 func (p *noder) importDecl(imp *syntax.ImportDecl) {
 	val := p.basicLit(imp.Path)
-	ipkg := importfile(&val, nil)
+	ipkg := importfile(&val)
 
 	if ipkg == nil {
 		if nerrors == 0 {