SIP-169: Deprecate Low Volume L1 Synths

SIP-169 https://sips.synthetix.io/sips/sip-169 proposes to deprecate a number of L1 Synths as we move closer to launching L2. The proposed Synths are generating low volumes for the network with most having high exchange fees on L1 and add various front running and other risk factors which can be better solved for on L2

The Synths to be deprecated include s1INCH, sXTZ, sGOOG, sAMZN, sAAPL, sCOIN, sCOMP, sCRV, sDASH, sEOS, sETC, sFTSE, sFB, sLTC, sMSFT, sXMR, sNFLX, sNIKKEI, sREN, sXRP, sRUNE, sTRX, sTSLA, sUNI, sYFI, sBNB.

Once deprecated each asset can be re-evaluated and then launched on L2…