Remove no longer needed patch for kdesignerplugin

recipes-kf5/tier3/kdesignerplugin.inc

@@ -13,7 +13,6 @@ DEPENDS = " \
 
 SRC_URI = " \
     git://anongit.kde.org/kdesignerplugin;nobranch=1 \
-    file://0001-optional-kdoctools.patch \
 "
 S = "${WORKDIR}/git"
 

recipes-kf5/tier3/kdesignerplugin/0001-optional-kdoctools.patch

@@ -1,44 +0,0 @@
-commit 3cc55f8cd9424abc4a8b1ba31599b8d14a65c56d
-Author: Volker Krause <vkrause@kde.org>
-Date:   Mon Jan 1 17:42:44 2018 +0100
-
-    Make kdoctools dependency optional
-    
-    Summary: Same as its done in other frameworks. This simplifies cross-compilation.
-    
-    Reviewers: #frameworks
-    
-    Tags: #frameworks
-    
-    Differential Revision: https://phabricator.kde.org/D9594
-
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index b8429f3..e23c479 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -29,7 +29,7 @@ include(ECMPoQmTools)
- 
- find_package(KF5CoreAddons ${KF5_DEP_VERSION} REQUIRED)
- find_package(KF5Config ${KF5_DEP_VERSION} REQUIRED)
--find_package(KF5DocTools ${KF5_DEP_VERSION} REQUIRED)
-+find_package(KF5DocTools ${KF5_DEP_VERSION})
- 
- find_package(KF5Completion ${KF5_DEP_VERSION})
- set_package_properties(KF5Completion PROPERTIES TYPE OPTIONAL
-@@ -89,10 +89,14 @@ remove_definitions(-DQT_NO_CAST_FROM_ASCII)
- 
- set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/KF5DesignerPlugin")
- 
--add_subdirectory(docs)
-+if (KF5DocTools_FOUND)
-+    add_subdirectory(docs)
-+endif()
- if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/po")
-     ecm_install_po_files_as_qm(po)
--    kdoctools_install(po)
-+    if (KF5DocTools_FOUND)
-+        kdoctools_install(po)
-+    endif()
- endif()
- 
- add_subdirectory(src)