[api-minor] Remove the obsolete createBlob helper function

[Snuffleupagus]

At this point in time, all supported browsers have native support for Blob; please see https://developer.mozilla.org/en-US/docs/Web/API/Blob/Blob#Browser_compatibility.
Furthermore, note how the helper function was throwing an error if Blob isn't available anyway.

[Snuffleupagus]

/botio unittest

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_unittest from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.67.70.0:8877/68bc263d7903ef3/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_unittest from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.215.176.217:8877/f35dfc519cd4897/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://54.215.176.217:8877/f35dfc519cd4897/output.txt

Total script time: 7.31 mins

• Unit Tests: Passed

[pdfjsbot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.67.70.0:8877/68bc263d7903ef3/output.txt

Total script time: 8.08 mins

• Unit Tests: Passed

[timvandermeij]

/botio test

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_test from @timvandermeij received. Current queue size: 1

Live output at: http://54.67.70.0:8877/a96862e2a184563/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_test from @timvandermeij received. Current queue size: 1

Live output at: http://54.215.176.217:8877/8b4277cfd9287af/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://54.215.176.217:8877/8b4277cfd9287af/output.txt

Total script time: 30.80 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[pdfjsbot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.67.70.0:8877/a96862e2a184563/output.txt

Total script time: 36.63 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[timvandermeij]

/botio-linux preview

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_preview from @timvandermeij received. Current queue size: 0

Live output at: http://54.67.70.0:8877/da6ffae7ebffa47/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.67.70.0:8877/da6ffae7ebffa47/output.txt

Total script time: 7.21 mins

Published

• Viewer: http://54.67.70.0:8877/da6ffae7ebffa47/web/viewer.html

[timvandermeij]

Nice find!