tests: move test to more appropriate location

The test is a C++ semantic analysis test, move it to SemaCXX from Sema.  NFC.

llvm-svn: 219932

diff --git a/clang/test/Sema/attributed-auto-deduction.cpp b/clang/test/SemaCXX/attributed-auto-deduction.cpp
similarity index 100%
rename from clang/test/Sema/attributed-auto-deduction.cpp
rename to clang/test/SemaCXX/attributed-auto-deduction.cpp