[libc][NFC][Obvious] Remove few unnecessary pieces from ilogb tests.

GitOrigin-RevId: d1b921e3bf2937f34d93485b4c2c6d86fcc3a830
diff --git a/test/src/math/ilogb_test.cpp b/test/src/math/ilogb_test.cpp
index cf71ac0..b17feb8 100644
--- a/test/src/math/ilogb_test.cpp
+++ b/test/src/math/ilogb_test.cpp
@@ -10,16 +10,11 @@
 
 #include "include/math.h"
 #include "src/math/ilogb.h"
-#include "utils/CPP/Functional.h"
 #include "utils/FPUtil/FPBits.h"
 #include "utils/FPUtil/ManipulationFunctions.h"
 #include "utils/FPUtil/TestHelpers.h"
 #include "utils/UnitTest/Test.h"
 
-#include <limits.h>
-
-using RunContext = __llvm_libc::testing::RunContext;
-
 TEST_F(ILogbTest, SpecialNumbers_ilogb) {
   testSpecialNumbers<double>(&__llvm_libc::ilogb);
 }
diff --git a/test/src/math/ilogbf_test.cpp b/test/src/math/ilogbf_test.cpp
index 109ddde..e449b8d 100644
--- a/test/src/math/ilogbf_test.cpp
+++ b/test/src/math/ilogbf_test.cpp
@@ -10,16 +10,11 @@
 
 #include "include/math.h"
 #include "src/math/ilogbf.h"
-#include "utils/CPP/Functional.h"
 #include "utils/FPUtil/FPBits.h"
 #include "utils/FPUtil/ManipulationFunctions.h"
 #include "utils/FPUtil/TestHelpers.h"
 #include "utils/UnitTest/Test.h"
 
-#include <limits.h>
-
-using RunContext = __llvm_libc::testing::RunContext;
-
 TEST_F(ILogbTest, SpecialNumbers_ilogbf) {
   testSpecialNumbers<float>(&__llvm_libc::ilogbf);
 }
diff --git a/test/src/math/ilogbl_test.cpp b/test/src/math/ilogbl_test.cpp
index 6404c6b..bae9061 100644
--- a/test/src/math/ilogbl_test.cpp
+++ b/test/src/math/ilogbl_test.cpp
@@ -10,14 +10,11 @@
 
 #include "include/math.h"
 #include "src/math/ilogbl.h"
-#include "utils/CPP/Functional.h"
 #include "utils/FPUtil/FPBits.h"
 #include "utils/FPUtil/ManipulationFunctions.h"
 #include "utils/FPUtil/TestHelpers.h"
 #include "utils/UnitTest/Test.h"
 
-#include <limits.h>
-
 using RunContext = __llvm_libc::testing::RunContext;
 
 TEST_F(ILogbTest, SpecialNumbers_ilogbl) {