Remove dead code from tests

Author: DavisVaughan

cpp11test/src/test-doubles.cpp

@@ -233,7 +233,7 @@ context("doubles-C++") {
     UNPROTECT(1);
   }
 
-#if defined(__APPLE__) && defined(R_VERSION) && R_VERSION >= R_Version(3, 5, 0)
+#if defined(__APPLE__)
   test_that("writable::doubles(ALTREP_SEXP)") {
     // ALTREP compact-seq
     auto seq = cpp11::package("base")["seq"];

cpp11test/src/test-integers.cpp

@@ -1,4 +1,3 @@
-#include "Rversion.h"
 #include "cpp11/R.hpp"
 #include "cpp11/doubles.hpp"
 #include "cpp11/function.hpp"
@@ -218,7 +217,7 @@ context("integers-C++") {
     expect_true(x[2] == 3);
   }
 
-#if defined(__APPLE__) && defined(R_VERSION) && R_VERSION >= R_Version(3, 5, 0)
+#if defined(__APPLE__)
   test_that("writable::integers(ALTREP_SEXP)") {
     // ALTREP compact-seq
     auto seq = cpp11::package("base")["seq"];

cpp11test/src/test-r_vector.cpp

@@ -7,14 +7,6 @@
 
 #include <algorithm>  // for max_element
 
-#ifdef _WIN32
-#include "Rversion.h"
-#define CPP11_HAS_IS_UTILITIES R_VERSION >= R_Version(4, 0, 0)
-#else
-#define CPP11_HAS_IS_UTILITIES 1
-#endif
-
-#if CPP11_HAS_IS_UTILITIES
 context("r_vector-capabilities-C++") {
   test_that("read only vector capabilities") {
     using cpp11::integers;
@@ -77,7 +69,6 @@ context("r_vector-capabilities-C++") {
     expect_true(std::is_move_assignable<integers::proxy>::value);
   }
 }
-#endif
 
 context("r_vector-C++") {
   test_that("writable vector temporary isn't leaked (integer) (#338)") {