[nginx-php] delete empty lines because of build error (automated builds)

nginx-php/7.1/Dockerfile

@@ -122,8 +122,6 @@ ARG CUSTOM_PKGS=" \
 COPY rootfs /
 
 RUN NB_CORES=${BUILD_CORES-$(getconf _NPROCESSORS_CONF)} \
-
-### Packages installation
  && BUILD_DEPS=" \
     linux-headers \
     libtool \
@@ -154,8 +152,6 @@ RUN NB_CORES=${BUILD_CORES-$(getconf _NPROCESSORS_CONF)} \
     pcre \
     zlib \
     ${CUSTOM_PKGS} \
-
-### Source downloading
  && wget http://nginx.org/download/nginx-${NGINX_VER}.tar.gz -O /tmp/nginx-${NGINX_VER}.tar.gz \
  && wget http://nginx.org/download/nginx-${NGINX_VER}.tar.gz.asc -O /tmp/nginx-${NGINX_VER}.tar.gz.asc \
  && wget ${PHP_MIRROR}/get/php-${PHP_VER}.tar.gz/from/this/mirror -O /tmp/php-${PHP_VER}.tar.gz \
@@ -166,26 +162,18 @@ RUN NB_CORES=${BUILD_CORES-$(getconf _NPROCESSORS_CONF)} \
  && tar xzf /tmp/nginx-${NGINX_VER}.tar.gz -C /usr/src \
  && tar xzvf /tmp/php-${PHP_VER}.tar.gz -C /usr/src \
  && tar xzf /tmp/libiconv-${LIBICONV_VERSION}.tar.gz -C /usr/src \
-
-### nginx installation
  && cd /usr/src/nginx-${NGINX_VER} \
  && ./configure --with-cc-opt="-O3 -fPIE -fstack-protector-strong" ${NGINX_CONF} \
  && make -j ${NB_CORES} \
  && make install \
-
-### GNU Libiconv installation
  && cd /usr/src/libiconv-${LIBICONV_VERSION} \
  && ./configure --prefix=/usr/local \
  && make && make install && libtool --finish /usr/local/lib \
-
-### PHP installation
  && mv /usr/src/php-${PHP_VER} /usr/src/php \
  && cd /usr/src/php \
  && ./configure CFLAGS="-O3 -fstack-protector-strong" ${PHP_CONF} \
  && make -j ${NB_CORES} \
  && make install \
-
-### Strip, clean, install modules
  && { find /usr/local/bin /usr/local/sbin -type f -perm +0111 -exec strip --strip-all '{}' + || true; } \
  && make clean \
  && chmod u+x /usr/local/bin/* /etc/s6.d/*/* \