test: misc php 7.4 fixes (GoogleCloudPlatform#1158)

Author: bshaffer

.kokoro/docker/php74/Dockerfile

@@ -49,16 +49,12 @@ RUN ln -s /usr/lib/libc-client.a /usr/lib/x86_64-linux-gnu/libc-client.a && \
         --with-config-file-scan-dir=${PHP_DIR}/lib/conf.d \
         --with-pdo-pgsql \
         --with-zlib-dir \
-        --with-freetype-dir \
         --enable-mbstring \
-        --with-libxml-dir=/usr \
         --enable-soap \
         --enable-intl \
         --enable-calendar \
         --with-curl \
-        --with-mcrypt \
         --with-zlib \
-        --with-gd \
         --with-pgsql \
         --disable-rpath \
         --enable-inline-optimization \
@@ -73,14 +69,8 @@ RUN ln -s /usr/lib/libc-client.a /usr/lib/x86_64-linux-gnu/libc-client.a && \
         --enable-exif \
         --enable-bcmath \
         --with-mhash \
-        --enable-zip \
-        --with-pcre-regex \
-        --with-mysql \
         --with-pdo-mysql \
         --with-mysqli \
-        --with-jpeg-dir=/usr \
-        --with-png-dir=/usr \
-        --enable-gd-native-ttf \
         --with-openssl \
         --with-fpm-user=www-data \
         --with-fpm-group=www-data \

testing/composer.json

@@ -1,6 +1,6 @@
 {
     "require": {
-        "php": "^7.2|^7.3|7.4"
+        "php": "^7.2|^7.3|^7.4"
     },
     "require-dev": {
         "google/cloud-tools": "dev-master",