remove fpic patches from run-getdeps.py

Summary: We don't need this patch function in `run-getdeps.py`, we can just add the flag directly to the boost-python manifest.

Differential Revision: D108040039

fbshipit-source-id: 0d20ed8140c3edbb2fa6572ef28de2167b87cb3c

Author: KevinYakar

build/fbcode_builder/manifests/boost-python

@@ -107,7 +107,8 @@ builder = nop
 # https://bugzilla.redhat.com/show_bug.cgi?id=1806545
 pch=off
 # Python extensions need -fPIC for static library linking into shared objects
-cxxflags="-fPIC"
+cxxflags=-fPIC
+cflags=-fPIC
 
 [b2.args.os=darwin]
 toolset=clang