build: remove OpenSSL detection and libs

configure.ac

@@ -555,13 +555,8 @@ case $host in
          dnl It's safe to add these paths even if the functionality is disabled by
          dnl the user (--without-wallet or --without-gui for example).
 
-         openssl_prefix=`$BREW --prefix openssl 2>/dev/null`
          bdb_prefix=`$BREW --prefix berkeley-db4 2>/dev/null`
          qt5_prefix=`$BREW --prefix qt5 2>/dev/null`
-         if test x$openssl_prefix != x; then
-           PKG_CONFIG_PATH="$openssl_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
-           export PKG_CONFIG_PATH
-         fi
          if test x$bdb_prefix != x; then
            CPPFLAGS="$CPPFLAGS -I$bdb_prefix/include"
            LIBS="$LIBS -L$bdb_prefix/lib"
@@ -1255,7 +1250,6 @@ if test x$use_pkgconfig = xyes; then
   m4_ifdef(
     [PKG_CHECK_MODULES],
     [
-      PKG_CHECK_MODULES([CRYPTO], [libcrypto],,[AC_MSG_ERROR(libcrypto not found.)])
       if test x$use_qr != xno; then
         BITCOIN_QT_CHECK([PKG_CHECK_MODULES([QR], [libqrencode], [have_qrencode=yes], [have_qrencode=no])])
       fi
@@ -1278,8 +1272,6 @@ if test x$use_pkgconfig = xyes; then
     ]
   )
 else
-  AC_CHECK_HEADER([openssl/crypto.h],,AC_MSG_ERROR(libcrypto headers missing))
-  AC_CHECK_LIB([crypto],      [main],CRYPTO_LIBS=-lcrypto, AC_MSG_ERROR(libcrypto missing))
 
   if test x$build_bitcoin_cli$build_bitcoind$bitcoin_enable_qt$use_tests != xnononono; then
     AC_CHECK_HEADER([event2/event.h],, AC_MSG_ERROR(libevent headers missing),)
@@ -1599,7 +1591,6 @@ AC_SUBST(TESTDEFS)
 AC_SUBST(LEVELDB_TARGET_FLAGS)
 AC_SUBST(MINIUPNPC_CPPFLAGS)
 AC_SUBST(MINIUPNPC_LIBS)
-AC_SUBST(CRYPTO_LIBS)
 AC_SUBST(EVENT_LIBS)
 AC_SUBST(EVENT_PTHREADS_LIBS)
 AC_SUBST(ZMQ_LIBS)