[unified] revert partially adding restrict

In benchmarks the (add|sub)_diag operations could experience significant slowdowns (up to 30% for single-threaded n=20k on intel), while the benefit in other cases was not as significant.

Author: MarcelKoch

common/unified/matrix/dense_kernels.template.cpp

@@ -196,8 +196,7 @@ void add_scaled_diag(std::shared_ptr<const DefaultExecutor> exec,
                 y(i, i) += alpha[0] * diag[i];
             }
         },
-        x->get_size()[0], as_restrict(alpha),
-        as_restrict(x->get_const_values()), as_restrict(y));
+        x->get_size()[0], alpha->get_const_values(), x->get_const_values(), y);
 }
 
 
@@ -215,8 +214,7 @@ void sub_scaled_diag(std::shared_ptr<const DefaultExecutor> exec,
                 y(i, i) -= alpha[0] * diag[i];
             }
         },
-        x->get_size()[0], as_restrict(alpha),
-        as_restrict(x->get_const_values()), as_restrict(y));
+        x->get_size()[0], alpha->get_const_values(), x->get_const_values(), y);
 }