Bug 1401814 - Don't disable crash reporter in coverage builds. r=jmaher

--HG--
extra : rebase_source : cf03bb5f87b4919f7177f69c132de31cb191afa3

browser/config/mozconfigs/linux64/code-coverage

@@ -4,7 +4,6 @@ TOOLTOOL_DIR=${TOOLTOOL_DIR:-$topsrcdir}
 
 ac_add_options --disable-install-strip
 ac_add_options --disable-jemalloc
-ac_add_options --disable-crashreporter
 ac_add_options --disable-elf-hack
 ac_add_options --enable-debug
 ac_add_options --disable-sandbox