Revert "fix: timestamp resolution to microseconds on Windows (getsentry#1039)"

This reverts commit a6ba26e.

Related comments:
aseprite/aseprite#4691 (comment)
getsentry#1039 (comment)

Author: dacap

src/sentry_utils.h

@@ -106,11 +106,9 @@ sentry__usec_time(void)
     // Contains a 64-bit value representing the number of 100-nanosecond
     // intervals since January 1, 1601 (UTC).
     FILETIME file_time;
-#    if _WIN32_WINNT >= 0x0602
-    GetSystemTimePreciseAsFileTime(&file_time);
-#    else
-    GetSystemTimeAsFileTime(&file_time);
-#    endif
+    SYSTEMTIME system_time;
+    GetSystemTime(&system_time);
+    SystemTimeToFileTime(&system_time, &file_time);
 
     uint64_t timestamp = (uint64_t)file_time.dwLowDateTime
         + ((uint64_t)file_time.dwHighDateTime << 32);