[tempo-distributed] Remove mem-ballast-size-mbs flags

[cablespaghetti]

Fixes #2887

Removes mem-ballast-size-mbs flags that are hardcoded into the chart. If I understand correctly this is something that is not useful for modern versions of Go, and instead users can optionally set a GOMEMLIMIT environment variable depending on the resources they have given to each container.

[CLAassistant]

All committers have signed the CLA.

[joe-elliott]

@mattdurham we tried this recently internally and saw increased resource usage correct?

[mattdurham]

It requires a bit of fiddling with GOMEMLIMIT/GOMEMLIMIT, depending on the module the CPU was the same to 15% higher, but with massive memory savings across the cluster. Its on my backlog to dig into it since different modules may require different tweaks.