Remove block from frame object. Will eventually be replaced with code object.

runtime/block.go

@@ -35,7 +35,6 @@ func NewBlock(name, filename string, fn func(*Frame, *Object) (*Object, *BaseExc
 func (b *Block) Exec(back *Frame, globals *Dict) (*Object, *BaseException) {
 	f := newFrame(back)
 	f.globals = globals
-	f.block = b
 	return b.execInternal(f, nil)
 }
 

runtime/frame.go

@@ -38,7 +38,6 @@ type Frame struct {
 	state       RunState
 	globals     *Dict `attr:"f_globals"`
 	lineno      int   `attr:"f_lineno"`
-	block       *Block `attr:"f_code"`
 }
 
 // newFrame creates a new Frame whose parent frame is back.

runtime/generator.go

@@ -46,7 +46,6 @@ type Generator struct {
 func NewGenerator(b *Block, globals *Dict) *Generator {
 	f := newFrame(nil)
 	f.globals = globals
-	f.block = b
 	return &Generator{Object: Object{typ: GeneratorType}, block: b, frame: f}
 }