internal/runtime/maps: get rid of a few obsolete TODOs

Change-Id: I7b3d95c0861ae2b6e0721b65aa75cda036435e9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/625903
Reviewed-by: Keith Randall <[email protected]>
Reviewed-by: Michael Pratt <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

Author: randall77

src/internal/runtime/maps/table.go

@@ -68,16 +68,11 @@ type table struct {
 	// locality, but it comes at the expense of wasted space for some types
 	// (consider uint8 key, uint64 element). Consider placing all keys
 	// together in these cases to save space.
-	//
-	// TODO(prattmic): Support indirect keys/values? This means storing
-	// keys/values as pointers rather than inline in the slot. This avoid
-	// bloating the table size if either type is very large.
 	groups groupsReference
 }
 
 func newTable(typ *abi.SwissMapType, capacity uint64, index int, localDepth uint8) *table {
 	if capacity < abi.SwissMapGroupSlots {
-		// TODO: temporary until we have a real map type.
 		capacity = abi.SwissMapGroupSlots
 	}