net-misc/r8168: drop unused patch(es)

Closes: https://github.com/gentoo/gentoo/pull/19292
Package-Manager: Portage-3.0.14, Repoman-3.0.2
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

net-misc/r8168/files/kernel56.patch

@@ -1,50 +0,0 @@
---- r8168-8.048.00/src/r8168_n.c	2019-11-26 08:32:35.000000000 +0000
-+++ r8168-8.048.00/src/r8168_n.c	2020-03-16 12:34:04.893511463 +0000
-@@ -456,7 +456,13 @@ static void rtl8168_hw_config(struct net
- static void rtl8168_hw_start(struct net_device *dev);
- static int rtl8168_close(struct net_device *dev);
- static void rtl8168_set_rx_mode(struct net_device *dev);
-+
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,6,0)
- static void rtl8168_tx_timeout(struct net_device *dev);
-+#else
-+static void rtl8168_tx_timeout(struct net_device *dev, unsigned int txqueue);
-+#endif
-+
- static struct net_device_stats *rtl8168_get_stats(struct net_device *dev);
- static int rtl8168_rx_interrupt(struct net_device *, struct rtl8168_private *, napi_budget);
- static int rtl8168_change_mtu(struct net_device *dev, int new_mtu);
-@@ -1616,12 +1622,21 @@ static int rtl8168_proc_open(struct inod
-         return single_open(file, show, dev);
- }
- 
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,6,0)
- static const struct file_operations rtl8168_proc_fops = {
-         .open           = rtl8168_proc_open,
-         .read           = seq_read,
-         .llseek         = seq_lseek,
-         .release        = single_release,
- };
-+#else
-+static const struct proc_ops rtl8168_proc_fops = {
-+         .proc_open           = rtl8168_proc_open,
-+         .proc_read           = seq_read,
-+         .proc_lseek         = seq_lseek,
-+         .proc_release        = single_release,
-+};
-+#endif
- #endif
- 
- /*
-@@ -27844,7 +27859,11 @@ static void rtl8168_reset_task(struct wo
- }
- 
- static void
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,6,0)
- rtl8168_tx_timeout(struct net_device *dev)
-+#else
-+rtl8168_tx_timeout(struct net_device *dev, unsigned int txqueue)
-+#endif
- {
-         struct rtl8168_private *tp = netdev_priv(dev);
-         unsigned long flags;