Revert "scons: Fix build when rtti is disabled"

This reverts commit 94d05bf87a21bd364e84f699a0064e5fba58a6f9 as it has a
few problems:

- it breaks windows builds becuase env[LLVM_CXXFLAGS] is never set there

- it is merging not only rtti, but the whole cxxflags (defines etc)
  which has proven to be a source of troubles (breaks debugging etc.)

1 files changed, 0 insertions, 3 deletions

diff --git a/scons/llvm.py b/scons/llvm.py
index 34b58910aa3..c1c37362d3c 100644
--- a/scons/llvm.py
+++ b/scons/llvm.py
@@ -190,9 +190,6 @@ def generate(env):
                 pass
             env.MergeFlags(cppflags)
 
-            cxxflags = env.backtick('llvm-config --cxxflags').rstrip()
-            env.Append(LLVM_CXXFLAGS = cxxflags)
-
             components = ['engine', 'bitwriter', 'x86asmprinter']
 
             if llvm_version >= distutils.version.LooseVersion('3.1'):