Remove Ubuntu rethrow signals patch

This was removed from Ubunut's X.org packages years ago, so drop it from
our packing as well.

contrib/packages/deb/ubuntu-bionic/debian/rules

 xorg-source-stamp: $(XORG_SOURCE_ARCHIVE)
 	tar -C unix/xserver -axf $(XORG_SOURCE_ARCHIVE) --strip-components=1
 	cd unix/xserver && patch -p1 < ../xserver119.patch
-	patch -p1 < debian/xorg-source-patches/100_rethrow_signals.patch
 	patch -p1 < debian/xorg-source-patches/516_tigervnc-xorg-manpages.patch
 	touch xorg-source-stamp
 

contrib/packages/deb/ubuntu-bionic/debian/xorg-source-patches/100_rethrow_signals.patch

-diff -up tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c.orig tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c
---- tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c.orig	2020-04-02 11:18:00.000000000 +0200
-+++ tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c	2020-04-02 12:44:06.365607230 +0200
-@@ -229,11 +229,17 @@ void ddxGiveUp(enum ExitCode error)
- }
- 
- void
--AbortDDX(enum ExitCode error)
-+SigAbortDDX(int signo, enum ExitCode error)
- {
-     ddxGiveUp(error);
- }
- 
-+void
-+AbortDDX(enum ExitCode error)
-+{
-+    SigAbortDDX(0, error);
-+}
-+
- #ifdef __DARWIN__
- void
- DarwinHandleGUI(int argc, char *argv[])

contrib/packages/deb/ubuntu-focal/debian/rules

 xorg-source-stamp: $(XORG_SOURCE_ARCHIVE)
 	tar -C unix/xserver -axf $(XORG_SOURCE_ARCHIVE) --strip-components=1
 	cd unix/xserver && patch -p1 < ../xserver120.patch
-	patch -p1 < debian/xorg-source-patches/100_rethrow_signals.patch
 	patch -p1 < debian/xorg-source-patches/516_tigervnc-xorg-manpages.patch
 	touch xorg-source-stamp
 

contrib/packages/deb/ubuntu-focal/debian/xorg-source-patches/100_rethrow_signals.patch

-diff -up tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c.orig tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c
---- tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c.orig	2020-04-02 11:18:00.000000000 +0200
-+++ tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c	2020-04-02 12:44:06.365607230 +0200
-@@ -229,11 +229,17 @@ void ddxGiveUp(enum ExitCode error)
- }
- 
- void
--AbortDDX(enum ExitCode error)
-+SigAbortDDX(int signo, enum ExitCode error)
- {
-     ddxGiveUp(error);
- }
- 
-+void
-+AbortDDX(enum ExitCode error)
-+{
-+    SigAbortDDX(0, error);
-+}
-+
- #ifdef __DARWIN__
- void
- DarwinHandleGUI(int argc, char *argv[])

contrib/packages/deb/ubuntu-xenial/debian/rules

 	tar -C unix/xserver -axf $(XORG_SOURCE_ARCHIVE) --strip-components=1
 	patch -p1 < debian/xorg-source-patches/xserver118-patch.patch
 	cd unix/xserver && patch -p1 < ../xserver118.patch
-	patch -p1 < debian/xorg-source-patches/100_rethrow_signals.patch
 	patch -p1 < debian/xorg-source-patches/516_tigervnc-xorg-manpages.patch
 	touch xorg-source-stamp
 

contrib/packages/deb/ubuntu-xenial/debian/xorg-source-patches/100_rethrow_signals.patch

-diff -up tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c.orig tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c
---- tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c.orig	2020-04-02 11:18:00.000000000 +0200
-+++ tigervnc-1.10.80/unix/xserver/hw/vnc/xvnc.c	2020-04-02 12:44:06.365607230 +0200
-@@ -229,11 +229,17 @@ void ddxGiveUp(enum ExitCode error)
- }
- 
- void
--AbortDDX(enum ExitCode error)
-+SigAbortDDX(int signo, enum ExitCode error)
- {
-     ddxGiveUp(error);
- }
- 
-+void
-+AbortDDX(enum ExitCode error)
-+{
-+    SigAbortDDX(0, error);
-+}
-+
- #ifdef __DARWIN__
- void
- DarwinHandleGUI(int argc, char *argv[])