Remove IfChange/ThenChange lint from VFS2

As new functionality is added to VFS2, corresponding files in VFS1
don't need to be changed.

PiperOrigin-RevId: 312153799

pkg/sentry/fsimpl/devpts/line_discipline.go

@@ -27,8 +27,6 @@ import (
 	"gvisor.dev/gvisor/pkg/waiter"
 )
 
-// LINT.IfChange
-
 const (
 	// canonMaxBytes is the number of bytes that fit into a single line of
 	// terminal input in canonical mode. This corresponds to N_TTY_BUF_SIZE
@@ -445,5 +443,3 @@ func (l *lineDiscipline) peek(b []byte) int {
 	}
 	return size
 }
-
-// LINT.ThenChange(../../fs/tty/line_discipline.go)

pkg/sentry/fsimpl/devpts/master.go

@@ -27,8 +27,6 @@ import (
 	"gvisor.dev/gvisor/pkg/waiter"
 )
 
-// LINT.IfChange
-
 // masterInode is the inode for the master end of the Terminal.
 type masterInode struct {
 	kernfs.InodeAttrs
@@ -222,5 +220,3 @@ func maybeEmitUnimplementedEvent(ctx context.Context, cmd uint32) {
 		unimpl.EmitUnimplementedEvent(ctx)
 	}
 }
-
-// LINT.ThenChange(../../fs/tty/master.go)

pkg/sentry/fsimpl/devpts/queue.go

@@ -25,8 +25,6 @@ import (
 	"gvisor.dev/gvisor/pkg/waiter"
 )
 
-// LINT.IfChange
-
 // waitBufMaxBytes is the maximum size of a wait buffer. It is based on
 // TTYB_DEFAULT_MEM_LIMIT.
 const waitBufMaxBytes = 131072
@@ -236,5 +234,3 @@ func (q *queue) waitBufAppend(b []byte) {
 	q.waitBuf = append(q.waitBuf, b)
 	q.waitBufLen += uint64(len(b))
 }
-
-// LINT.ThenChange(../../fs/tty/queue.go)

pkg/sentry/fsimpl/devpts/slave.go

@@ -26,8 +26,6 @@ import (
 	"gvisor.dev/gvisor/pkg/waiter"
 )
 
-// LINT.IfChange
-
 // slaveInode is the inode for the slave end of the Terminal.
 type slaveInode struct {
 	kernfs.InodeAttrs
@@ -182,5 +180,3 @@ func (sfd *slaveFileDescription) Stat(ctx context.Context, opts vfs.StatOptions)
 	fs := sfd.vfsfd.VirtualDentry().Mount().Filesystem()
 	return sfd.inode.Stat(fs, opts)
 }
-
-// LINT.ThenChange(../../fs/tty/slave.go)

pkg/sentry/fsimpl/devpts/terminal.go

@@ -22,8 +22,6 @@ import (
 	"gvisor.dev/gvisor/pkg/usermem"
 )
 
-// LINT.IfChanges
-
 // Terminal is a pseudoterminal.
 //
 // +stateify savable
@@ -120,5 +118,3 @@ func (tm *Terminal) tty(isMaster bool) *kernel.TTY {
 	}
 	return tm.slaveKTTY
 }
-
-// LINT.ThenChange(../../fs/tty/terminal.go)