GODRIVER-2649 Remove ReadConcern command setter and field

Author: prestonvasquez

x/mongo/driver/operation/command.go

@@ -14,7 +14,6 @@ import (
 	"go.mongodb.org/mongo-driver/event"
 	"go.mongodb.org/mongo-driver/internal/logger"
 	"go.mongodb.org/mongo-driver/mongo/description"
-	"go.mongodb.org/mongo-driver/mongo/readconcern"
 	"go.mongodb.org/mongo-driver/mongo/readpref"
 	"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
 	"go.mongodb.org/mongo-driver/x/mongo/driver"
@@ -24,7 +23,6 @@ import (
 // Command is used to run a generic operation.
 type Command struct {
 	command        bsoncore.Document
-	readConcern    *readconcern.ReadConcern
 	database       string
 	deployment     driver.Deployment
 	selector       description.ServerSelector
@@ -162,16 +160,6 @@ func (c *Command) Deployment(deployment driver.Deployment) *Command {
 	return c
 }
 
-// ReadConcern specifies the read concern for this operation.
-func (c *Command) ReadConcern(readConcern *readconcern.ReadConcern) *Command {
-	if c == nil {
-		c = new(Command)
-	}
-
-	c.readConcern = readConcern
-	return c
-}
-
 // ReadPreference set the read preference used with this operation.
 func (c *Command) ReadPreference(readPreference *readpref.ReadPref) *Command {
 	if c == nil {