[llvm-dev] Why do we have a git tag called "release_35 at 215010"?

[Duncan P. N. Exon Smith via llvm-dev]

I.e., I see this when I run `git fetch`:
```
$ git fetch -v llvm.org
From http://llvm.org/git/llvm
 = [up to date]      master     -> llvm.org/master
 = [up to date]      release_1  -> llvm.org/release_1
 = [up to date]      release_16 -> llvm.org/release_16
 = [up to date]      release_20 -> llvm.org/release_20
 = [up to date]      release_21 -> llvm.org/release_21
 = [up to date]      release_22 -> llvm.org/release_22
 = [up to date]      release_23 -> llvm.org/release_23
 = [up to date]      release_24 -> llvm.org/release_24
 = [up to date]      release_25 -> llvm.org/release_25
 = [up to date]      release_26 -> llvm.org/release_26
 = [up to date]      release_27 -> llvm.org/release_27
 = [up to date]      release_28 -> llvm.org/release_28
 = [up to date]      release_29 -> llvm.org/release_29
 = [up to date]      release_30 -> llvm.org/release_30
 = [up to date]      release_31 -> llvm.org/release_31
 = [up to date]      release_32 -> llvm.org/release_32
 = [up to date]      release_33 -> llvm.org/release_33
 = [up to date]      release_34 -> llvm.org/release_34
 = [up to date]      release_35 -> llvm.org/release_35
 = [up to date]      release_35 at 215010 -> llvm.org/release_35 at 215010
 = [up to date]      release_36 -> llvm.org/release_36
 = [up to date]      release_37 -> llvm.org/release_37
 = [up to date]      release_38 -> llvm.org/release_38
 = [up to date]      stable     -> llvm.org/stable
 = [up to date]      testing    -> llvm.org/testing
```
The release_35 at 215010 looks bogus.  Why is it there?  If there's no good reason, who has permission to remove it?