bcc: fix some of python script with wrong shebang

[chenxy1988]

The examples/tracing/nflatency.py has already upgraded the shebang to python3 on upstream, so when we apply the do_install:append function, the shebang of nflatency.py become /usr/bin/env python33

Signed-off-by: Xiangyu Chen xiangyu.chen@windriver.com

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[kraj]

Can you rebase it on top of master branch and re-push

[kraj]

closing in favor of https://github.com/kraj/meta-clang/pull/822