Remove some unused headers and functions (#91177)

* Remove winternl.h

* Remove winver.h

* Remove verrsrc.h

* Remove dbghelp.h

* Remove conio.h

* Remove io.h

* FILECFAbsoluteTimeToFileTime

* Delete some unused header files

* More unused structs and macros

* Update fxver.h

Author: huoyaoyuan

src/coreclr/debug/createdump/createdump.h

@@ -33,8 +33,6 @@ extern void trace_verbose_printf(const char* format, ...);
 #endif
 
 #include <windows.h>
-#include <winternl.h>
-#include <winver.h>
 #include <stdlib.h>
 #include <stdint.h>
 #include <stddef.h>
@@ -84,6 +82,7 @@ typedef int T_CONTEXT;
 #define __STDC_FORMAT_MACROS
 #include <inttypes.h>
 #else
+#include <winternl.h>
 #include <dbghelp.h>
 #endif
 #include <map>

src/coreclr/debug/daccess/stdafx.h

@@ -26,7 +26,9 @@
 
 #include <winwrap.h>
 
+#ifdef HOST_WINDOWS
 #include <dbghelp.h>
+#endif
 
 #include <wchar.h>
 #include <stdio.h>

src/coreclr/ildasm/ildasmpch.h

@@ -12,7 +12,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
-#include <conio.h>
 
 #ifndef Debug_ReportError
 #define Debug_ReportError(strMessage)

src/coreclr/inc/clr/stack.h

@@ -630,10 +630,6 @@ typedef unsigned int ALG_ID;
 // 1 null termination
 #define LOCALE_NAME_MAX_LENGTH   85
 
-#define CSTR_LESS_THAN            1
-#define CSTR_EQUAL                2
-#define CSTR_GREATER_THAN         3
-
 
 #ifdef __cplusplus
 /*
@@ -736,22 +732,13 @@ typename std::remove_reference<T>::type&& move( T&& t );
 
 typedef DWORD OLE_COLOR;
 
-#define PF_COMPARE_EXCHANGE_DOUBLE          2
-
-typedef VOID (NTAPI * WAITORTIMERCALLBACKFUNC) (PVOID, BOOLEAN );
-
 typedef HANDLE HWND;
 
-#define IS_TEXT_UNICODE_SIGNATURE             0x0008
-#define IS_TEXT_UNICODE_UNICODE_MASK          0x000F
-
 typedef struct _LIST_ENTRY {
    struct _LIST_ENTRY *Flink;
    struct _LIST_ENTRY *Blink;
 } LIST_ENTRY, *PLIST_ENTRY;
 
-typedef VOID (NTAPI *WAITORTIMERCALLBACK)(PVOID, BOOLEAN);
-
 // PORTABILITY_ASSERT and PORTABILITY_WARNING macros are meant to be used to
 // mark places in the code that needs attention for portability. The usual
 // usage pattern is:
@@ -866,11 +853,6 @@ interface ITypeInfo;
 interface ITypeLib;
 interface IMoniker;
 
-typedef VOID (WINAPI *LPOVERLAPPED_COMPLETION_ROUTINE)(
-    DWORD dwErrorCode,
-    DWORD dwNumberOfBytesTransferred,
-    LPOVERLAPPED lpOverlapped);
-
 //
 // Debug APIs
 //
@@ -1108,26 +1090,6 @@ typedef LONG (WINAPI *PTOP_LEVEL_EXCEPTION_FILTER)(
     );
 typedef PTOP_LEVEL_EXCEPTION_FILTER LPTOP_LEVEL_EXCEPTION_FILTER;
 
-/******************* ntdef ************************************/
-
-#ifndef ANYSIZE_ARRAY
-#define ANYSIZE_ARRAY 1       // winnt
-#endif
-
-/******************* winnt ************************************/
-
-typedef struct LIST_ENTRY32 {
-    ULONG Flink;
-    ULONG Blink;
-} LIST_ENTRY32;
-typedef LIST_ENTRY32 *PLIST_ENTRY32;
-
-typedef struct LIST_ENTRY64 {
-    ULONGLONG Flink;
-    ULONGLONG Blink;
-} LIST_ENTRY64;
-typedef LIST_ENTRY64 *PLIST_ENTRY64;
-
 /******************** PAL RT APIs *******************************/
 
 typedef struct _HSATELLITE *HSATELLITE;

src/coreclr/inc/clr/win32.h

@@ -10,5 +10,4 @@
 // winresrc.h for PAL
 // Included in .rc files.
 
-#include "winver.h"
 #include "palrt.h"

src/coreclr/pal/inc/rt/conio.h

@@ -1,7 +1,11 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+// Our custom .rc parser on Unix follows the #ifdef and #include rules
+// Use #ifndef here to avoid dummy verrsrc.h
+#ifndef HOST_UNIX
 #include <verrsrc.h>
+#endif
 
 #define QUOTE_MACRO_HELPER(x)       #x
 #define QUOTE_MACRO(x)              QUOTE_MACRO_HELPER(x)