Cleanup: delete unused buildconfig files

build_configs/buildconfig_arch

-set(PYTHON_BINARY "/usr/bin/python2"  CACHE PATH "")

build_configs/buildconfig_arch_clang

-set(PYTHON_BINARY "/usr/bin/python2"  CACHE PATH "")
-set(CMAKE_C_COMPILER "/usr/bin/clang" CACHE PATH "")
-set(CMAKE_CXX_COMPILER "/usr/bin/clang++" CACHE PATH "")
-set(CMAKE_AR "/usr/bin/llvm-ar" CACHE PATH "")
-set(CMAKE_LINKER "/usr/bin/llvm-ld" CACHE PATH "")
-set(CMAKE_NM "/usr/bin/llvm-inm" CACHE PATH "")
-set(CMAKE_OBJDUMP "/usr/bin/llvm-objdump" CACHE PATH "")
-set(CMAKE_RANLIB "/usr/bin/llvm-ranlib" CACHE PATH "")
-set(CMAKE_CXX_FLAGS_RELEASE "-Wno-array-bounds -pthread -O3 -DNDEBUG -Wno-parentheses -Wno-constant-logical-operand -fcolor-diagnostics" CACHE STRING "")
-set(CMAKE_CXX_FLAGS_DEBUG "-Wno-array-bounds -g -pthread -Wno-parentheses -Wno-constant-logical-operand -fcolor-diagnostics" CACHE STRING "")

build_configs/buildconfig_arch_static

-set(PYTHON_BINARY "/usr/bin/python2"  CACHE PATH "")
-set(ZLIB_LIBRARY "/usr/lib/libz.a"  CACHE PATH "")
-set(PNG_LIBRARY "/usr/lib/libpng12.a"  CACHE PATH "")
-set(FFTW_LIBRARIES "/usr/lib/libfftw3f.a"  CACHE PATH "")

build_configs/buildconfig_bc2_locallibs

-set(FFTW_INCLUDE_PATH "/import/bc2/soft/app/FFTW/current/Linux/include/" CACHE PATH "")
-set(FFTW_LIBRARIES "/import/bc2/soft/app/FFTW/current/Linux/lib/libfftw3f.so"  CACHE PATH "")
-set(Boost_COMPILER "-gcc41"  CACHE PATH "")
-set(PYTHON_ROOT "/import/bc2/soft/app/Python/current/Linux/"  CACHE PATH "")
-set(EIGEN2_INCLUDE_DIR "/import/bc2/soft/app/eigen/current/Linux/include/eigen2" CACHE PATH "")
-set(BOOST_ROOT "/import/bc2/soft/app/boost/current/Linux"  CACHE PATH "")
-set(QT_QMAKE_EXECUTABLE "/import/bc2/soft/app/Qt/current/Linux/bin/qmake" CACHE PATH "")
-set(COMPOUND_LIB "/import/bc2/home/schwede/GROUP/OpenStructure/ChemLib/compounds.chemlib" CACHE PATH "")
-set(TIFF_LIBRARY "${OST_LOCAL_LIBS}/lib/libtiff.so"  CACHE PATH "")
-set(TIFF_INCLUDE_DIR "${OST_LOCAL_LIBS}/include/" CACHE PATH "")
-set (CMAKE_BUILD_TYPE "Release" CACHE PATH "")

build_configs/buildconfig_bc2_static_locallibs

-set(FFTW_INCLUDE_PATH "/import/bc2/soft/app/FFTW/current/Linux/include/" CACHE PATH "")
-set(FFTW_LIBRARIES "/import/bc2/soft/app/FFTW/current/Linux/lib/libfftw3f.a"  CACHE PATH "")
-set(DL_LIBRARIES "/usr/lib64/libdl.a"  CACHE PATH "")
-set(PTHREAD_LIBRARIES "/usr/lib64/libpthread.a"  CACHE PATH "")
-set(ZLIB_LIBRARY "/usr/lib64/libz.a"  CACHE PATH "")
-set(Boost_COMPILER "-gcc41"  CACHE PATH "")
-set(PYTHON_ROOT "/import/bc2/soft/app/Python/current/Linux/"  CACHE PATH "")
-set(EIGEN2_INCLUDE_DIR "/import/bc2/soft/app/eigen/current/Linux/include/eigen2" CACHE PATH "")
-set(QT_QMAKE_EXECUTABLE "/import/bc2/soft/app/Qt/current/Linux/bin/qmake" CACHE PATH "")
-set(COMPOUND_LIB "/import/bc2/home/schwede/GROUP/OpenStructure/ChemLib/compounds.chemlib" CACHE PATH "")
-set(TIFF_LIBRARY "${OST_LOCAL_LIBS}/lib/libtiff.a"  CACHE PATH "")
-set(TIFF_INCLUDE_DIR "${OST_LOCAL_LIBS}/include/" CACHE PATH "")
-set (CMAKE_BUILD_TYPE "Release" CACHE PATH "")