strip-llvm: Remove include/lldb if stripping a full install

If llvm is built with build-llvm.sh --full-llvm, we need to remove
this directory to end up with the same set of installed files as if
without --full-llvm, after stripping the install.

strip-llvm.sh

@@ -119,7 +119,7 @@ fi
 cd ..
 rm -rf share libexec
 cd include
-rm -rf clang clang-c lld llvm llvm-c
+rm -rf clang clang-c lld llvm llvm-c lldb
 cd ..
 cd lib
 for i in lib*.a *.so* *.dylib* cmake; do