dfile: remove chrome

It was causing build failures, and doesn't seem to be useful anymore.
(I think it was once used for depwatcher spec tests).

If any pipelines fail due to this, we can investigate that and find the
best solution.

Also, "build" dir was removed in #386 and didn't look like it had
anything useful.

Dockerfile

@@ -13,10 +13,6 @@ RUN apt-get -qqy update \
 
 RUN curl -q https://dl.google.com/linux/linux_signing_key.pub | apt-key add -
 
-COPY config/google-chrome-apt-key.pub /tmp/
-RUN echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list \
-  && apt-key add /tmp/google-chrome-apt-key.pub
-
 RUN echo "deb http://packages.cloud.google.com/apt cloud-sdk-jessie main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list \
   && curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
 
@@ -31,7 +27,6 @@ RUN apt-get -qqy update \
     default-libmysqlclient-dev \
     expect \
     git \
-    google-chrome-stable \
     google-cloud-sdk \
     iptables \
     jq \
@@ -77,12 +72,6 @@ RUN wget -O /usr/local/bin/om 'https://github.com/pivotal-cf/om/releases/downloa
   && [ 68d2cbff67e699168ba16c84dc75e0ff40fcb6024f53f53579b7227b793df158 = $(shasum -a 256 /usr/local/bin/om | cut -d' ' -f1) ] \
   && chmod +x /usr/local/bin/om
 
-# download and install chromedriver
-RUN wget -O chromedriver.zip 'https://chromedriver.storage.googleapis.com/2.34/chromedriver_linux64.zip' \
-  && [ e42a55f9e28c3b545ef7c7727a2b4218c37489b4282e88903e4470e92bc1d967 = $(shasum -a 256 chromedriver.zip | cut -d' ' -f1) ] \
-  && unzip chromedriver.zip -d /usr/local/bin/ \
-  && rm chromedriver.zip
-
 # composer is a package manager for PHP apps
 RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/bin/
 RUN mv /usr/bin/composer.phar /usr/bin/composer
@@ -120,9 +109,6 @@ RUN wget 'https://github.com/pivotal-cf-experimental/concourse-filter/releases/d
 # AWS CLI
 RUN pip install awscli
 
-# when docker container starts, ensure login scripts run
-COPY build/*.sh /etc/profile.d/
-
 # Ensure that Concourse filtering is on for non-interactive shells
 ENV BASH_ENV /etc/profile.d/filter.sh