[libcxx] [test] Strip trailing whitespace, NFC.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@324959 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/algorithms/alg.modifying.operations/alg.remove/remove.pass.cpp

@@ -25,7 +25,7 @@
 #if TEST_STD_VER > 17
 TEST_CONSTEXPR bool test_constexpr() {
     int ia[] = {1, 3, 5, 2, 5, 6};
-    
+
     auto it = std::remove(std::begin(ia), std::end(ia), 5);
 
     return (std::begin(ia) + std::size(ia) - 2) == it  // we removed two elements

test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy.pass.cpp

@@ -24,7 +24,7 @@
 TEST_CONSTEXPR bool test_constexpr() {
     int ia[] = {1, 3, 5, 2, 5, 6};
     int ib[std::size(ia)] = {0};
-    
+
     auto it = std::remove_copy(std::begin(ia), std::end(ia), std::begin(ib), 5);
 
     return std::distance(std::begin(ib), it) == (std::size(ia) - 2)   // we removed two elements

test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy_if.pass.cpp

@@ -28,7 +28,7 @@ TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; }
 TEST_CONSTEXPR bool test_constexpr() {
     int ia[] = {1, 3, 5, 2, 5, 6};
     int ib[std::size(ia)] = {0};
-    
+
     auto it = std::remove_copy_if(std::begin(ia), std::end(ia), std::begin(ib), equalToTwo);
 
     return std::distance(std::begin(ib), it) == (std::size(ia) - 1)   // we removed one element

test/std/algorithms/alg.modifying.operations/alg.remove/remove_if.pass.cpp

@@ -29,7 +29,7 @@ TEST_CONSTEXPR bool equal2 ( int i ) { return i == 2; }
 #if TEST_STD_VER > 17
 TEST_CONSTEXPR bool test_constexpr() {
     int ia[] = {1, 3, 5, 2, 5, 6};
-    
+
     auto it = std::remove_if(std::begin(ia), std::end(ia), equal2);
 
     return (std::begin(ia) + std::size(ia) - 1) == it  // we removed one element