Cleanup + Small TimeZoneInfo optimization for Unix (dotnet/corert#5314)

* Delete non-shared TimeZoneInfo.cs
* Delete duplicate resource

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>

diff --git a/src/mscorlib/shared/System/TimeZoneInfo.Unix.cs b/src/mscorlib/shared/System/TimeZoneInfo.Unix.cs
index 2f7830f..a06545f 100644 (file)
--- a/src/mscorlib/shared/System/TimeZoneInfo.Unix.cs
+++ b/src/mscorlib/shared/System/TimeZoneInfo.Unix.cs
@@ -525,7 +525,8 @@ namespace System
         {
             try
             {
-                using (FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
+                // bufferSize == 1 used to avoid unnecessary buffer in FileStream
+                using (FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize: 1))
                 {
                     if (stream.Length == rawData.Length)
                     {