ENH: remove unused files

CMakeSystemConfig.txt.in

@@ -1,11 +0,0 @@
-# 
-# CMakeLocal.make.in should be in the directory where you run configure
-# in, which need not be the source directory
-#
-
-SET (CXXCOMPILER     @CXX@)
-SET (WORDS_BIGENDIAN @WORDS_BIGENDIAN@)
-SET (HAVE_LIMITS_H   @HAVE_LIMITS_H@)
-SET (HAVE_UNISTD_H   @HAVE_UNISTD_H@)
-
-

CMakeWindowsSystemConfig.txt

@@ -1,10 +0,0 @@
-# 
-# CMakeLocal.make.in should be in the directory where you run configure
-# in, which need not be the source directory
-#
-SET (WORDS_BIGENDIAN )
-SET (HAVE_LIMITS_H   1)
-SET (HAVE_UNISTD_H   1)
-SET (CXXCOMPILER     VC-60)
-
-