Remove invalid tests.

Remove invalid tests that were intended to be tests of (hugemax+1) OOM,
for which tests already exist.
diff --git a/test/integration/mallocx.c b/test/integration/mallocx.c
index 6ecd636..42eee10 100644
--- a/test/integration/mallocx.c
+++ b/test/integration/mallocx.c
@@ -48,7 +48,7 @@
 
 TEST_BEGIN(test_overflow)
 {
-	size_t hugemax, size;
+	size_t hugemax;
 
 	hugemax = get_huge_size(get_nhuge()-1);
 
@@ -61,14 +61,6 @@
 	assert_ptr_null(mallocx(SIZE_T_MAX, 0),
 	    "Expected OOM for mallocx(size=%#zx, 0)", SIZE_T_MAX);
 
-#if LG_SIZEOF_PTR == 3
-	size      = ZU(0x600000000000000);
-#else
-	size      = ZU(0x6000000);
-#endif
-	assert_ptr_null(mallocx(size, 0),
-	    "Expected OOM for mallocx(size=%#zx, 0", size);
-
 	assert_ptr_null(mallocx(1, MALLOCX_ALIGN(ZU(PTRDIFF_MAX)+1)),
 	    "Expected OOM for mallocx(size=1, MALLOCX_ALIGN(%#zx))",
 	    ZU(PTRDIFF_MAX)+1);
diff --git a/test/integration/rallocx.c b/test/integration/rallocx.c
index c3c2241..66ad866 100644
--- a/test/integration/rallocx.c
+++ b/test/integration/rallocx.c
@@ -221,7 +221,7 @@
 
 TEST_BEGIN(test_overflow)
 {
-	size_t hugemax, size;
+	size_t hugemax;
 	void *p;
 
 	hugemax = get_huge_size(get_nhuge()-1);
@@ -238,14 +238,6 @@
 	assert_ptr_null(rallocx(p, SIZE_T_MAX, 0),
 	    "Expected OOM for rallocx(p, size=%#zx, 0)", SIZE_T_MAX);
 
-#if LG_SIZEOF_PTR == 3
-	size      = ZU(0x600000000000000);
-#else
-	size      = ZU(0x6000000);
-#endif
-	assert_ptr_null(rallocx(p, size, 0),
-	    "Expected OOM for rallocx(p, size=%#zx, 0", size);
-
 	assert_ptr_null(rallocx(p, 1, MALLOCX_ALIGN(ZU(PTRDIFF_MAX)+1)),
 	    "Expected OOM for rallocx(p, size=1, MALLOCX_ALIGN(%#zx))",
 	    ZU(PTRDIFF_MAX)+1);