Remove bazel startup options in favor of .bazelrc

[shYkiSto]

Remove default startup options from bazel invocations in favor of the user/project configuration specified in the .bazelrc. This avoids introducing changes that would cause the server to restart between bazel invocations, reducing the likelihood of cache invalidation. E.g.,

# `jz changes` command invokes bazel w/ different startup options (main invocation vs. subsequent `bazel query`)
% echo "WORKSPACE" | jz changes
...
# Running build after `jz changes` will require restarting the server, as startup options are different from the `bazel query`, which invalidates all analysis cache
% jz noop
WARNING: Running Bazel server needs to be killed, because the startup options are different.
Starting local Bazel server and connecting to it...

Example .bazelrc:

startup --host_jvm_args="-Xmx15g"