libeigen: remove unused patch

Remove the following unused patch:
        0001-CMakeLists.txt-install-FindEigen3.cmake-script.patch

Signed-off-by: Maxin B. John <maxin.john@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-support/libeigen/libeigen/0001-CMakeLists.txt-install-FindEigen3.cmake-script.patch

@@ -1,28 +0,0 @@
-From fd8bc66efac1059c1068f804746b01b90177c333 Mon Sep 17 00:00:00 2001
-From: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>
-Date: Sun, 18 Oct 2015 16:52:25 +0200
-Subject: [PATCH] CMakeLists.txt: install FindEigen3.cmake script
-
-Upstream-Status: Pending
-
-Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>
----
- CMakeLists.txt | 2 ++
- 1 file changed, 2 insertions(+)
-
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 76a11b9..ec6c6ea 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -342,6 +342,8 @@ if(EIGEN_BUILD_PKGCONFIG)
-         )
- endif(EIGEN_BUILD_PKGCONFIG)
- 
-+install(FILES "${PROJECT_SOURCE_DIR}/cmake/FindEigen3.cmake" DESTINATION "${CMAKE_INSTALL_PREFIX}/share/cmake/Modules")
-+
- add_subdirectory(Eigen)
- 
- add_subdirectory(doc EXCLUDE_FROM_ALL)
--- 
-1.9.3
-