Remove patch that has been integrated upstream.

In some build environments, the patch command would revert the diff...

Patching file src/core/CMakeLists.txt using Plan A...
Reversed (or previously applied) patch detected!  Assume -R? [y]
Hunk #1 succeeded at 1317 with fuzz 2 (offset 424 lines).

... and thus reintroduce the problem the diff was intended to fix.

geo/qgis/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.122 2020/02/25 12:16:52 landry Exp $
+# $OpenBSD: Makefile,v 1.123 2020/02/28 14:46:08 naddy Exp $
 
 BROKEN-powerpc =	does not build: "operand out of range"
 
@@ -7,6 +7,7 @@ COMMENT =	desktop geographical information system
 DPB_PROPERTIES =	parallel
 
 DISTNAME =	qgis-3.12.0
+REVISION =	0
 EXTRACT_SUFX =	.tar.bz2
 CATEGORIES =	geo x11
 DEBUG_PACKAGES =${BUILD_PACKAGES}

geo/qgis/patches/patch-src_core_CMakeLists_txt

@@ -1,19 +0,0 @@
-$OpenBSD: patch-src_core_CMakeLists_txt,v 1.26 2020/01/21 12:50:46 landry Exp $
-
-takes many hours with the default (225)
-
-https://bugreports.qt.io/browse/QTBUG-57672
-https://bugs.llvm.org/show_bug.cgi?id=42515
-https://github.com/qgis/QGIS/commit/59a766e22a12cc274cf1b852d466f34848297658
-
-Index: src/core/CMakeLists.txt
---- src/core/CMakeLists.txt.orig
-+++ src/core/CMakeLists.txt
-@@ -893,6 +893,7 @@ ELSE(MSVC)
-   SET_SOURCE_FILES_PROPERTIES(${QGIS_CORE_MOC_SRCS} PROPERTIES COMPILE_FLAGS "-Wno-deprecated-declarations" )
-   IF ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" AND (CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES RelWithDebInfo))
-     SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/qgsexpression_texts.cpp PROPERTIES COMPILE_FLAGS "-O1")
-+    SET_SOURCE_FILES_PROPERTIES(qgscoordinatereferencesystem.cpp PROPERTIES COMPILE_FLAGS "-mllvm -inline-threshold=128")
-   ENDIF ()
- ENDIF(MSVC)
-