refactor: ostream.h header file made deprecated

test/runtime/atomic_test.cpp

@@ -29,7 +29,6 @@ import std;
 #ifdef MP_UNITS_MODULES
 import mp_units;
 #else
-#include <mp-units/ostream.h>  // IWYU pragma: keep
 #include <mp-units/systems/isq/space_and_time.h>
 #include <mp-units/systems/si.h>
 #endif

test/runtime/distribution_test.cpp

@@ -34,7 +34,6 @@ import std;
 #ifdef MP_UNITS_MODULES
 import mp_units;
 #else
-#include <mp-units/ostream.h>  // IWYU pragma: keep
 #include <mp-units/random.h>
 #include <mp-units/systems/isq/space_and_time.h>
 #include <mp-units/systems/si.h>

test/runtime/fmt_test.cpp

@@ -40,7 +40,6 @@ import std;
 import mp_units;
 #else
 #include <mp-units/cartesian_vector.h>
-#include <mp-units/ostream.h>  // IWYU pragma: keep
 #include <mp-units/systems/cgs.h>
 #include <mp-units/systems/isq/electromagnetism.h>
 #include <mp-units/systems/isq/mechanics.h>

test/runtime/linear_algebra_test.cpp

@@ -33,7 +33,6 @@ import std;
 import mp_units;
 #else
 #include <mp-units/math.h>
-#include <mp-units/ostream.h>  // IWYU pragma: keep
 #include <mp-units/systems/isq/mechanics.h>
 #include <mp-units/systems/isq/space_and_time.h>
 #include <mp-units/systems/si.h>

test/runtime/math_test.cpp

@@ -32,7 +32,6 @@ import std;
 import mp_units;
 #else
 #include <mp-units/math.h>
-#include <mp-units/ostream.h>  // IWYU pragma: keep
 #include <mp-units/systems/angular.h>
 #include <mp-units/systems/isq/space_and_time.h>
 #include <mp-units/systems/si.h>

test/runtime/truncation_test.cpp

@@ -34,7 +34,6 @@ import std;
 #ifdef MP_UNITS_MODULES
 import mp_units;
 #else
-#include <mp-units/ostream.h>  // IWYU pragma: keep
 #include <mp-units/systems/angular.h>
 #endif