chore: prune LP test that used test-only methods

"LP deposits, earns fees, withdraws" is overtaken by
"LPs deposit USDC" and "LP withdraws part; collects fees on 100 USDC"

packages/fast-usdc/test/fast-usdc.contract.test.ts

@@ -320,50 +320,6 @@ const makeLP = async (
   return me;
 };
 
-test.skip('LP deposits, earns fees, withdraws', async t => {
-  const common = await commonSetup(t);
-  const {
-    commonPrivateArgs,
-    brands: { usdc },
-    utils,
-  } = common;
-
-  const { instance, creatorFacet, zoe, terms } = await startContract(common);
-  const usdcPurse = purseOf(terms.issuers.USDC, utils);
-  const lps = {
-    alice: makeLP('Alice', usdcPurse(60n), zoe, instance, t),
-    bob: makeLP('Bob', usdcPurse(50n), zoe, instance, t),
-  };
-
-  await Promise.all([E(lps.alice).deposit(60n), E(lps.bob).deposit(40n)]);
-
-  {
-    t.log('simulate borrow and repay so pool accrues fees');
-    const feeTools = makeFeeTools(commonPrivateArgs.feeConfig);
-    const requestedAmount = usdc.make(50n);
-    const splits = feeTools.calculateSplit(requestedAmount);
-
-    const amt = await E(creatorFacet).testBorrow({ USDC: splits.Principal });
-    t.deepEqual(
-      amt.USDC,
-      splits.Principal,
-      'testBorrow returns requested amount',
-    );
-    const repayPayments = await deeplyFulfilledObject(
-      objectMap(splits, utils.pourPayment),
-    );
-    const remaining = await E(creatorFacet).testRepay(splits, repayPayments);
-    for (const r of Object.values(remaining)) {
-      t.is(r.value, 0n, 'testRepay consumes all payments');
-    }
-  }
-  const actual = await Promise.all([
-    E(lps.alice).withdraw(0.2),
-    E(lps.bob).withdraw(0.8),
-  ]);
-  t.like(actual, [{ value: BigInt(60 * 0.2) }]);
-});
-
 test.skip('LP borrow', async t => {
   const common = await commonSetup(t);
   const {