Revert "php7: Fix compilation without deprecated OpenSSL APIs"

This reverts commit a176ffa0a1.
I just noticed that I accidentally used wrong openwrt branch
to compile this, with 18.09 branch the compilation fails.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

lang/php7/patches/1001-ext-opcache-fix-detection-of-shm-mmap.patch

@@ -22,9 +22,9 @@ diff --git a/ext/opcache/config.m4 b/ext/opcache/config.m4
 index b7e4835..7b6c0aa 100644
 --- a/ext/opcache/config.m4
 +++ b/ext/opcache/config.m4
-@@ -28,127 +28,13 @@ if test "$PHP_OPCACHE" != "no"; then
- 
-   AC_CHECK_HEADERS([unistd.h sys/uio.h])
+@@ -11,127 +11,13 @@ if test "$PHP_OPCACHE" != "no"; then
+     AC_DEFINE(HAVE_MPROTECT, 1, [Define if you have mprotect() function])
+   ])
  
 -  AC_MSG_CHECKING(for sysvipc shared memory support)
 -  AC_TRY_RUN([