Remove minimum version check test

To allow removal of the check in the client, see
celo-org/celo-blockchain#2026.

packages/celotool/src/e2e-tests/blockchain_parameters_tests.ts

@@ -84,19 +84,5 @@ describe('Blockchain parameters tests', function (this: any) {
       const res = await parameters.getBlockGasLimit()
       assert.equal(0, res.comparedTo(23000000))
     })
-    it('should exit when minimum version is updated', async () => {
-      this.timeout(0)
-      await setMinimumClientVersion(1, 9, 99)
-      // The client checks every 60 seconds and then waits 10 seconds before quitting, so we
-      // may have to wait a little over 70 seconds
-      await sleep(75, true)
-      try {
-        // It should have exited by now, call RPC to trigger error
-        await kit.connection.getBlockNumber()
-      } catch (_) {
-        return
-      }
-      throw new Error('expected failure')
-    })
   })
 })