Delete php-raw7 benchmark (#4784)

After #4530 php use raw php7 and php-activerecord the ORM version

frameworks/PHP/php/benchmark_config.json

@@ -43,27 +43,6 @@
       "notes": "",
       "versus": "php"
     },
-    "raw7": {
-      "db_url": "/dbraw.php",
-      "query_url": "/dbquery.php?queries=",
-      "fortune_url": "/fortune.php",
-      "update_url": "/updateraw.php?queries=",
-      "port": 8080,
-      "approach": "Realistic",
-      "classification": "Platform",
-      "database": "MySQL",
-      "framework": "None",
-      "language": "PHP",
-      "flavor": "PHP7",
-      "orm": "Raw",
-      "platform": "None",
-      "webserver": "nginx",
-      "os": "Linux",
-      "database_os": "Linux",
-      "display_name": "PHP-raw",
-      "notes": "",
-      "versus": "php"
-    },
     "raw7-tcp": {
       "db_url": "/dbraw.php",
       "query_url": "/dbquery.php?queries=",

frameworks/PHP/php/php-raw7.dockerfile

@@ -1,20 +0,0 @@
-FROM ubuntu:18.10
-
-ARG DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update -yqq && apt-get install -yqq software-properties-common > /dev/null
-RUN LC_ALL=C.UTF-8 add-apt-repository ppa:ondrej/php
-RUN apt-get update -yqq > /dev/null && \
-    apt-get install -yqq nginx git unzip php7.3 php7.3-common php7.3-cli php7.3-fpm php7.3-mysql  > /dev/null
-
-COPY deploy/conf/* /etc/php/7.3/fpm/
-
-ADD ./ /php
-WORKDIR /php
-
-RUN if [ $(nproc) = 2 ]; then sed -i "s|pm.max_children = 1024|pm.max_children = 512|g" /etc/php/7.3/fpm/php-fpm.conf ; fi;
-
-RUN chmod -R 777 /php
-
-CMD service php7.3-fpm start && \
-    nginx -c /php/deploy/nginx7.conf -g "daemon off;"