Post-3.0 cleanup: remove unused legacy snapshot creation methods.
Post-3.0 cleanup: remove unused legacy snapshot creation methods.

creative-quant/voltdb,flybird119/voltdb,simonzhangsm/voltdb,migue/voltdb,kobronson/cs-voltdb,flybird119/voltdb,kumarrus/voltdb,kumarrus/voltdb,deerwalk/voltdb,paulmartel/voltdb,paulmartel/voltdb,zuowang/voltdb,deerwalk/voltdb,migue/voltdb,wolffcm/voltdb,kobronson/cs-voltdb,zuowang/voltdb,wolffcm/voltdb,paulmartel/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,kumarrus/voltdb,kumarrus/voltdb,kobronson/cs-voltdb,paulmartel/voltdb,simonzhangsm/voltdb,zuowang/voltdb,ingted/voltdb,creative-quant/voltdb,VoltDB/voltdb,kobronson/cs-voltdb,deerwalk/voltdb,migue/voltdb,migue/voltdb,wolffcm/voltdb,flybird119/voltdb,paulmartel/voltdb,flybird119/voltdb,migue/voltdb,creative-quant/voltdb,zuowang/voltdb,flybird119/voltdb,deerwalk/voltdb,migue/voltdb,deerwalk/voltdb,creative-quant/voltdb,deerwalk/voltdb,kobronson/cs-voltdb,paulmartel/voltdb,ingted/voltdb,zuowang/voltdb,deerwalk/voltdb,kobronson/cs-voltdb,ingted/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,ingted/voltdb,wolffcm/voltdb,creative-quant/voltdb,ingted/voltdb,ingted/voltdb,wolffcm/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,kobronson/cs-voltdb,migue/voltdb,VoltDB/voltdb,migue/voltdb,kobronson/cs-voltdb,flybird119/voltdb,ingted/voltdb,flybird119/voltdb,simonzhangsm/voltdb,flybird119/voltdb,wolffcm/voltdb,zuowang/voltdb,kumarrus/voltdb,creative-quant/voltdb,VoltDB/voltdb,zuowang/voltdb,wolffcm/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,kumarrus/voltdb,creative-quant/voltdb,paulmartel/voltdb,zuowang/voltdb,ingted/voltdb,kumarrus/voltdb,wolffcm/voltdb,VoltDB/voltdb,paulmartel/voltdb