Revert "initial attempt to integrate surf http client"

This reverts commit 538d52d064.

reddit/reddit-options.go

@@ -1,6 +1,8 @@
 package reddit
 
 import (
+	"errors"
+	"net/http"
 	"net/url"
 	"os"
 )
@@ -8,6 +10,17 @@ import (
 // Opt is used to further configure a client upon initialization.
 type Opt func(*Client) error
 
+// WithHTTPClient sets the HTTP client which will be used to make requests.
+func WithHTTPClient(httpClient *http.Client) Opt {
+	return func(c *Client) error {
+		if httpClient == nil {
+			return errors.New("*http.Client: cannot be nil")
+		}
+		c.client = httpClient
+		return nil
+	}
+}
+
 // WithUserAgent sets the User-Agent header for requests made with the client.
 // Reddit recommends the following format for the user agent:
 // <platform>:<app ID>:<version string> (by /u/<reddit username>)