Revert "from:php image: allow apt install of php-embed"

This reverts commit dfc2d2f63bd70c808e0bd7df38d6edbc2d0bb2ef.

Makefile

@@ -65,7 +65,6 @@ Dockerfile.php7.3: unit/version
 			-e 's,@@UNITPACKAGES@@,$(MODULE_php7.3),g' \
 			-e 's,@@UNIT_VERSION@@,$(UNIT_VERSION),g' \
 			> Dockerfile.php7.3
-	patch Dockerfile.php7.3 patch-Dockerfile.php7.3
 
 build-%: Dockerfile.%
 	docker build -t unit:$(VERSION)-$* -f Dockerfile.$* .

patch-Dockerfile.php7.3

@@ -1,27 +0,0 @@
-diff --git a/pkg/docker/Dockerfile.tmpl b/pkg/docker/Dockerfile.tmpl
-index 18d6d34..5fa7ad6 100644
---- a/pkg/docker/Dockerfile.tmpl
-+++ b/pkg/docker/Dockerfile.tmpl
-@@ -4,6 +4,14 @@ LABEL maintainer="NGINX Docker Maintainers <docker-maint@nginx.com>"
- 
- ENV UNIT_VERSION          @@UNIT_VERSION@@
- 
-+# php-embed package is a dependency of unit-php
-+RUN set -eux; \
-+	{ \
-+		echo 'Package: php-embed php-common php-composer-ca-bundle php-curl php-mbstring php7.3-curl php7.3-mbstring php7.3-common'; \
-+		echo 'Pin: release n=buster'; \
-+		echo 'Pin-Priority: 1000'; \
-+	} > /etc/apt/preferences.d/00-debian-php-embed
-+
- RUN set -x \
- 	&& apt-get update \
- 	&& apt-get install --no-install-recommends --no-install-suggests -y gnupg1 apt-transport-https ca-certificates \
-@@ -74,6 +82,7 @@ RUN set -x \
- 						$unitPackages \
-                         curl \
- 	&& apt-get remove --purge --auto-remove -y apt-transport-https && rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/unit.list \
-+	&& ln -sf /usr/share/php/Embed /usr/local/lib/php/Embed
- 	\
- # if we have leftovers from building, let's purge them (including extra, unnecessary build deps)
- 	&& if [ -n "$tempDir" ]; then \