cmd/internal/dwarf: remove unused SymValue method

Change-Id: Ied42c2778899ce12cc256f0a124b77bf0e141aee
Reviewed-on: https://go-review.googlesource.com/68471
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/internal/dwarf/dwarf.go

@@ -118,7 +118,6 @@ type Context interface {
 	AddAddress(s Sym, t interface{}, ofs int64)
 	AddSectionOffset(s Sym, size int, t interface{}, ofs int64)
 	AddString(s Sym, v string)
-	SymValue(s Sym) int64
 }
 
 // AppendUleb128 appends v to b using DWARF's unsigned LEB128 encoding.

src/cmd/internal/obj/objfile.go

@@ -443,9 +443,6 @@ func (c dwCtxt) AddString(s dwarf.Sym, v string) {
 	ls.WriteString(c.Link, ls.Size, len(v), v)
 	ls.WriteInt(c.Link, ls.Size, 1, 0)
 }
-func (c dwCtxt) SymValue(s dwarf.Sym) int64 {
-	return 0
-}
 func (c dwCtxt) AddAddress(s dwarf.Sym, data interface{}, value int64) {
 	ls := s.(*LSym)
 	size := c.PtrSize()

src/cmd/link/internal/ld/dwarf.go

@@ -42,9 +42,6 @@ func (c dwctxt) AddBytes(s dwarf.Sym, b []byte) {
 func (c dwctxt) AddString(s dwarf.Sym, v string) {
 	Addstring(s.(*sym.Symbol), v)
 }
-func (c dwctxt) SymValue(s dwarf.Sym) int64 {
-	return s.(*sym.Symbol).Value
-}
 
 func (c dwctxt) AddAddress(s dwarf.Sym, data interface{}, value int64) {
 	if value != 0 {