Revert "Add DLL requires for mingw package"

This reverts commit 7f015db. With
https://bugzilla.redhat.com/show_bug.cgi?id=1830233 understood, it isn't
necessary to provide these manually.

mingw-openconnect.spec.in

@@ -63,26 +63,14 @@ The OpenConnect multiprotocol VPN client library, cross-compiled for MinGW.
 %package -n mingw32-openconnect
 Summary:        OpenConnect VPN client library
 Requires:       pkgconfig
-Requires:       mingw32-gnutls
-Requires:       mingw32-p11-kit
-Requires:       mingw32-libxml2
-Requires:       mingw32-zlib
-Requires:       mingw32-lz4
-Requires:       mingw32-stoken
 
 %description -n mingw32-openconnect
 The OpenConnect multiprotocol VPN client library, cross-compiled for MinGW.
 
-# Win64
+# Win32
 %package -n mingw64-openconnect
 Summary:        OpenConnect VPN client library
 Requires:       pkgconfig
-Requires:       mingw64-gnutls
-Requires:       mingw64-p11-kit
-Requires:       mingw64-libxml2
-Requires:       mingw64-zlib
-Requires:       mingw64-lz4
-Requires:       mingw64-stoken
 
 %description -n mingw64-openconnect
 The OpenConnect multiprotocol VPN client library, cross-compiled for MinGW.