systemd: drop unreferenced uclibc specific agetty -> getty patch

The patch is uclibc specific and reference to it was removed from the
systemd recipe in:

  http://git.openembedded.org/openembedded-core/commit/?id=653704e9cf325cb494eb23facca19e9f05132ffd

(From OE-Core rev: 6ce87fdadab73e8a928864515495bc4ab3401577)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd/0002-units-Prefer-getty-to-agetty-in-console-setup-system.patch

@@ -1,44 +0,0 @@
-From 8736d9b9bb492f60e8f3a1a7fb5a05ba3201d86b Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Fri, 20 Feb 2015 05:29:15 +0000
-Subject: [PATCH 02/19] units: Prefer getty to agetty in console setup systemd
- units
-
-Upstream-Status: Inappropriate [configuration specific]
-
-Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- units/getty@.service.m4        | 2 +-
- units/serial-getty@.service.m4 | 2 +-
- 2 files changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/units/getty@.service.m4 b/units/getty@.service.m4
-index 5b82c13..e729469 100644
---- a/units/getty@.service.m4
-+++ b/units/getty@.service.m4
-@@ -33,7 +33,7 @@ ConditionPathExists=/dev/tty0
- 
- [Service]
- # the VT is cleared by TTYVTDisallocate
--ExecStart=-/sbin/agetty --noclear %I $TERM
-+ExecStart=-/sbin/getty -L %I $TERM
- Type=idle
- Restart=always
- RestartSec=0
-diff --git a/units/serial-getty@.service.m4 b/units/serial-getty@.service.m4
-index 4522d0d..e6d499d 100644
---- a/units/serial-getty@.service.m4
-+++ b/units/serial-getty@.service.m4
-@@ -22,7 +22,7 @@ Before=getty.target
- IgnoreOnIsolate=yes
- 
- [Service]
--ExecStart=-/sbin/agetty --keep-baud 115200,38400,9600 %I $TERM
-+ExecStart=-/sbin/getty -L 115200 %I $TERM
- Type=idle
- Restart=always
- UtmpIdentifier=%I
--- 
-2.10.2
-