IMO, the easiest method. (Names will be duplicated, but masked by step 5)

1) Highlight A2:B11

2) F5 >> Special >> Blanks >> OK

3) Enter the "=" sign and hit the up arrow one time. In the formula bar you will see A2

4) Commit with Ctrl + Enter

5) Conditional Formatting

• Highlight applicable range >> $A$2:$B$11
• Home Tab >> Styles >> Conditional Formatting >> New Rule
• Select a Rule Type: Use a formula to determine which cells to format
• Edit the Rule Description: Format values where this formula is true: =A1=A2
• Format… White Font
• OK >> OK

6) Highlight columns A:B >> Right click copy >> Right Click paste special >> Values >> OK

7) Now Right click on A2 >> Sort >> Sort A to Z