Merge #18405: build: Drop all of the ZeroMQ patches

f642b49af7 build: Drop ZeroMQ patch for glibc < 2.12 (Hennadii Stepanov)
079df9609e build: Drop ZeroMQ patch for Mingw-w64 < 4.0 (Hennadii Stepanov)

Pull request description:

  This PR gets rid of the all patches for ZeroMQ:
  - the [Mingw-w64 5.0 (Ubuntu 18.04 bionic)](https://packages.ubuntu.com/bionic/mingw-w64) is used to build the [Windows](https://github.com/bitcoin/bitcoin/blob/master/doc/build-windows.md) binaries
  - it is safe to use `pthread_setname_np` since #17538 when the minimal `glibc` version is set to 2.17; see: https://github.com/bitcoin/bitcoin/pull/11986#issuecomment-366105050

ACKs for top commit:
  fanquake:
    ACK f642b49af7.

Tree-SHA512: a2c97cdb682cd7d96a666ad099f20725a32bf8fda0842fc5534ca08a1634c90ba80afde92f9054595ed2501fbc5c02abbe3da765934ecff12d836ff25e277fc5

depends/packages/zeromq.mk

@@ -3,7 +3,6 @@ $(package)_version=4.3.1
 $(package)_download_path=https://github.com/zeromq/libzmq/releases/download/v$($(package)_version)/
 $(package)_file_name=$(package)-$($(package)_version).tar.gz
 $(package)_sha256_hash=bcbabe1e2c7d0eec4ed612e10b94b112dd5f06fcefa994a0c79a45d835cd21eb
-$(package)_patches=0001-fix-build-with-older-mingw64.patch 0002-disable-pthread_set_name_np.patch
 
 define $(package)_set_vars
   $(package)_config_opts=--without-docs --disable-shared --disable-curve --disable-curve-keygen --disable-perf
@@ -16,8 +15,6 @@ define $(package)_set_vars
 endef
 
 define $(package)_preprocess_cmds
-   patch -p1 < $($(package)_patch_dir)/0001-fix-build-with-older-mingw64.patch && \
-   patch -p1 < $($(package)_patch_dir)/0002-disable-pthread_set_name_np.patch && \
    cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub config
 endef