option: Drop AddCaller

We don't need AddCaller and WithCaller both.
WithCaller was added because AddCaller doesn't take a parameter.

exp/zapslog/handler_test.go

@@ -34,7 +34,7 @@ import (
 
 func TestAddCaller(t *testing.T) {
 	fac, logs := observer.New(zapcore.DebugLevel)
-	sl := slog.New(NewHandler(fac, AddCaller()))
+	sl := slog.New(NewHandler(fac, WithCaller(true)))
 	sl.Info("msg")
 
 	require.Len(t, logs.AllUntimed(), 1, "Expected exactly one entry to be logged")

exp/zapslog/options.go

@@ -40,15 +40,9 @@ func WithName(name string) Option {
 	})
 }
 
-// AddCaller configures the Logger to annotate each message with the filename,
-// line number, and function name of zap's caller. See also WithCaller.
-func AddCaller() Option {
-	return WithCaller(true)
-}
-
 // WithCaller configures the Logger to annotate each message with the filename,
-// line number, and function name of zap's caller, or not, depending on the
-// value of enabled. This is a generalized form of AddCaller.
+// line number, and function name of Zap's caller, or not, depending on the
+// value of enabled.
 func WithCaller(enabled bool) Option {
 	return optionFunc(func(handler *Handler) {
 		handler.addCaller = enabled