net-misc/grive: remove unused patch

Closes: https://github.com/gentoo/gentoo/pull/3647

net-misc/grive/files/grive-0.2.0-check-bfd.h.patch

@@ -1,36 +0,0 @@
-https://github.com/Grive/grive/pull/144
-
-From e2950364da813a5b27eab90c51cbea69fb3fd1f9 Mon Sep 17 00:00:00 2001
-From: Christoph Junghans <junghans@votca.org>
-Date: Fri, 2 Nov 2012 21:56:41 -0600
-Subject: [PATCH] Check if bfd.h can be included (fixes #72)
-
----
- cmake/Modules/FindBFD.cmake | 10 ++++++++--
- 1 file changed, 8 insertions(+), 2 deletions(-)
-
-diff --git a/cmake/Modules/FindBFD.cmake b/cmake/Modules/FindBFD.cmake
-index 785e29b..5fe43c1 100644
---- a/cmake/Modules/FindBFD.cmake
-+++ b/cmake/Modules/FindBFD.cmake
-@@ -1,9 +1,15 @@
- find_library( DL_LIBRARY 	NAMES dl	PATH /usr/lib /usr/lib64 )
- find_library( BFD_LIBRARY	NAMES bfd	PATH /usr/lib /usr/lib64 )
- 
--if ( DL_LIBRARY AND BFD_LIBRARY )
-+include(CheckCSourceCompiles)
-+check_c_source_compiles(
-+  "#include <bfd.h>
-+  int main(void) {
-+  return 0;
-+  }" BFD_WORKS)
-+if ( DL_LIBRARY AND BFD_LIBRARY AND BFD_WORKS)
- 	set( BFD_FOUND TRUE )
--endif (DL_LIBRARY AND BFD_LIBRARY)
-+endif (DL_LIBRARY AND BFD_LIBRARY AND BFD_WORKS)
- 
- if ( BFD_FOUND )
- 
--- 
-1.7.12
-