By Tom Bemis Twitter says $44 billion acquisition won approval with more than 98% of votes cast. Twitter (TWTR) – Get Twitter Inc. Report shareholders overwhelmingly approved the company’s planned $44 billion sale to Elon Musk on Sept. 13, but there appears to have been a notable absence in the proceedings. According to filings with the Securities and Exchange Commission, only about 60% of shares outstanding were voted at the meeting earlier this week to consider the deal. Overall, 459.6 million shares were voted at the meeting, the company said in the filing. Of those, 453.1 million, or 98.6%…