remove unused files

tests/safety_replay/install_capnp.sh

@@ -1,10 +0,0 @@
-#!/bin/bash -e
-
-apt-get install -y autoconf curl libtool
-curl -O https://capnproto.org/capnproto-c++-0.6.1.tar.gz
-tar xvf capnproto-c++-0.6.1.tar.gz
-cd capnproto-c++-0.6.1
-./configure --prefix=/usr/local CPPFLAGS=-DPIC CFLAGS=-fPIC CXXFLAGS=-fPIC LDFLAGS=-fPIC --disable-shared --enable-static
-make -j4
-make install
-

tests/safety_replay/requirements_extra.txt

@@ -1,7 +0,0 @@
-aenum
-subprocess32
-libarchive
-pycapnp
-pycurl
-tenacity
-atomicwrites