Remove shiftS.m, which is a duplicate of the one in dseries

matlab/shiftS.m

-function S = shiftS(S,n)
-%function S = shiftS(S,n)
-%
-% Removes the first n elements of a one dimensional cell array.
-
-% Copyright © 2013-2014 Dynare Team
-%
-% This file is part of Dynare.
-%
-% Dynare is free software: you can redistribute it and/or modify
-% it under the terms of the GNU General Public License as published by
-% the Free Software Foundation, either version 3 of the License, or
-% (at your option) any later version.
-%
-% Dynare is distributed in the hope that it will be useful,
-% but WITHOUT ANY WARRANTY; without even the implied warranty of
-% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-% GNU General Public License for more details.
-%
-% You should have received a copy of the GNU General Public License
-% along with Dynare.  If not, see <https://www.gnu.org/licenses/>.
-
-if length(S) >= n+1
-    S = S(n+1:end);
-else
-    S = {};
-end
-end
\ No newline at end of file