Fix Protobuf importing issue for embedded Python

As I mentioned in b/79751992 #4, when launcher loads __main__ as entry point,
the module dict got set using absolute pkg path which
was runfiles.google.protobuf which caused the type checking failed
(expected: google.protobuf for type()). After then, starting with non entrypoint
python files, the importing module dict would be set with from...import...

So remove dir:runfiles/ from zip section so that during entrypoint Python file
importing the proto files using
from...import..., the type checking can be passed.

Bug: b/79751992
Test: m clean && m out/host/linux-x86/bin/perf_proto_stack;
And execute it:
usage: perf_proto_stack [-h] [--syms SYMS] [--json-out JSON_OUT]
                        [--print-samples] [--skip-kernel-syms]
                        [--print-pid-histogram] [--print-sym-histogram]
                        [--print-dso-histogram] [--parallel PARALLEL]
                        file [file ...]
perf_proto_stack: error: too few arguments

Change-Id: I95a4a9ee95ce7f90d893ea0529c384d7b944abe4