RFR: 8280010: Remove double buffering of InputStream for Properties.load

[Alex Menkov]

On Mon, 10 Jan 2022 20:46:36 GMT, Andrey Turbanov <duke at openjdk.java.net> wrote:

> `Properties.load` uses `java.util.Properties.LineReader`. LineReader already buffers input stream. Hence wrapping InputStream in BufferedInputStream is redundant.

Marked as reviewed by amenkov (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7021