Remove 'replace' directive for 'go install' compatibility

Close #3577

src/tui/light.go

@@ -10,7 +10,7 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"github.com/mattn/go-runewidth"
+	"github.com/junegunn/go-runewidth"
 	"github.com/rivo/uniseg"
 
 	"golang.org/x/term"

src/tui/tcell.go

@@ -10,7 +10,7 @@ import (
 	"github.com/gdamore/tcell/v2/encoding"
 	"github.com/junegunn/fzf/src/util"
 
-	"github.com/mattn/go-runewidth"
+	"github.com/junegunn/go-runewidth"
 	"github.com/rivo/uniseg"
 )