No more custom base address in 'mozc_tip{32,64}.dll'

With Address Space Layout Randomization (ASLR), specifying unique base
address to DLLs at the link time is no longer recommended [1].

Actually we are currently seeing in the following warning when building
Mozc for Windows.

  [456/457] LINK_EMBED(DLL) mozc_tip64.dll
  LINK : warning LNK4281: undesirable base address 0x6000000 for x64
  image; set base address above 4GB for best ASLR optimization

Let's drop our custom 'BaseAddress' settings from 'mozc_tip{32,64}.dll'
to let the linker set the recommended value.

There must be no user observable behavior change anyway.

Closes #834.

 [1]: https://learn.microsoft.com/en-us/cpp/build/reference/base-base-address#remarks

PiperOrigin-RevId: 576203953

src/win32/tip/tip.gyp

@@ -151,11 +151,6 @@
             'gen_mozc_tip_resource_header',
             'tip_core',
           ],
-          'msvs_settings': {
-            'VCLinkerTool': {
-              'BaseAddress': '0x06000000',
-            },
-          },
         },
         {
           'target_name': 'mozc_tip64',
@@ -171,9 +166,6 @@
             'tip_core',
           ],
           'msvs_settings': {
-            'VCLinkerTool': {
-              'BaseAddress': '0x06000000',
-            },
             'VCManifestTool': {
               'EmbedManifest': 'true',
             },