Earlier mining speed

[KiwiHawk]

Remove Bob's mining from the mod pack. Only thing it adds is additional tiers of Steel Axe research.

When Bob's mining isn't enabled, increase starting hand mining speed.

Review how much bonus to mining speed Steel Axe gives.

[KiwiHawk]

First, review the entity mining time Bob's and Angel's mods. Standardize this with Base game. Once that is done, review if any change still feels required.