Remove unused --with-zlib-dir configure option

Commits that removed this option:
- 34dd032e4e
- a2c21e10b2
- e595f5cd8a

Closes GH-12209

.cirrus.yml

@@ -131,7 +131,6 @@ arm_task:
         --enable-exif
         --with-zip
         --with-zlib
-        --with-zlib-dir=/usr
         --enable-soap
         --enable-xmlreader
         --with-xsl

.github/actions/configure-x32/action.yml

@@ -35,7 +35,6 @@ runs:
             --enable-exif \
             --with-zip \
             --with-zlib \
-            --with-zlib-dir=/usr \
             --enable-soap \
             --enable-xmlreader \
             --with-xsl \

.github/actions/configure-x64/action.yml

@@ -33,7 +33,6 @@ runs:
           --enable-exif \
           --with-zip \
           --with-zlib \
-          --with-zlib-dir=/usr \
           --enable-soap \
           --enable-xmlreader \
           --with-xsl \

UPGRADING.INTERNALS

@@ -18,6 +18,9 @@ PHP 8.4 INTERNALS UPGRADE NOTES
 2. Build system changes
 ========================
 
+ a. Unix build system changes
+   - The configure option --with-zlib-dir has been removed.
+
 ========================
 3. Module changes
 ========================

ext/pdo_mysql/config.m4

@@ -4,15 +4,6 @@ PHP_ARG_WITH([pdo-mysql],
     [PDO: MySQL support. DIR is the MySQL base directory. If no value or mysqlnd
     is passed as DIR, the MySQL native driver will be used])])
 
-if test -z "$PHP_ZLIB_DIR"; then
-  PHP_ARG_WITH([zlib-dir],
-    [for the location of libz],
-    [AS_HELP_STRING([[--with-zlib-dir[=DIR]]],
-      [PDO_MySQL: Set the path to libz install prefix])],
-    [no],
-    [no])
-fi
-
 if test "$PHP_PDO_MYSQL" != "no"; then
   dnl This depends on ext/mysqli/config.m4 providing the PHP_MYSQL_SOCKET_SEARCH
   dnl macro and --with-mysql-sock configure option.

travis/compile.sh

@@ -41,7 +41,6 @@ $S390X_CONFIG \
 --enable-exif \
 --with-zip \
 --with-zlib \
---with-zlib-dir=/usr \
 --enable-soap \
 --enable-xmlreader \
 --with-xsl \