Drop pkgconf support for compat-libffi3.1.

Resolves: #1891914

libffi.spec

@@ -23,7 +23,6 @@ Patch1:	libffi-3.1-fix-exec-stack.patch
 Patch2: libffi-aarch64-rhbz1174037.patch
 Patch3: libffi-3.1-aarch64-fix-exec-stack.patch
 Patch4: libffi-3.1-libffi_tmpdir.patch
-Patch5: libffi3.1-pkgconfig.patch
 %endif
 
 BuildRequires: make
@@ -94,7 +93,6 @@ cd %{_builddir}/libffi-3.1
 %patch2 -p1 -b .aarch64
 %patch3 -p1 -b .aarch64execstack
 %patch4 -p1 -b .libffitmpdir
-%patch5 -p1 -b .pkgconfig
 %endif
 
 %build
@@ -186,6 +184,9 @@ install -m644 %{SOURCE2} $RPM_BUILD_ROOT%{_includedir}/ffitarget.h
 %{_infodir}/libffi.info.*
 
 %changelog
+* Thu Jul 29 2021 Carlos O'Donell <carlos@redhat.com> - 3.4.2-4
+- Drop pkgconf support for compat-libffi3.1. 
+
 * Tue Jul 27 2021 Carlos O'Donell <carlos@redhat.com> - 3.4.2-3
 - Add temporary compat-libffi3.1 for library transition.
 

libffi3.1-pkgconfig.patch

@@ -1,11 +0,0 @@
-diff -rup a/libffi.pc.in b/libffi.pc.in
---- a/libffi.pc.in	2020-12-02 15:33:14.076549606 -0500
-+++ b/libffi.pc.in	2020-12-02 16:11:42.855654638 -0500
-@@ -6,5 +6,5 @@ includedir=@includedir@
- Name: @PACKAGE_NAME@
- Description: Library supporting Foreign Function Interfaces
- Version: @PACKAGE_VERSION@
--Libs: -L${libdir} -lffi
-+Libs: -L${libdir} libffi.so.6
- Cflags: -I${includedir}
-Only in b: libffi.pc.in~