simplify test setups

contracts/gas-snapshots/ccip.gas-snapshot

@@ -720,8 +720,8 @@ TokenPool_parseRemoteDecimals:test_parseRemoteDecimals_NoDecimalsDefaultsToLocal
 TokenPool_removeRemotePool:test_InvalidRemotePoolForChain_Revert() (gas: 17432)
 TokenPool_removeRemotePool:test_NonExistentChain_Revert() (gas: 14277)
 TokenPool_removeRemotePool:test_removeRemotePool_Success() (gas: 188430)
-TokenPool_setChainRateLimiterConfigs:test_MismatchedArrayLengths_Revert() (gas: 25014)
-TokenPool_setChainRateLimiterConfigs:test_NonExistentChain_Revert() (gas: 19823)
+TokenPool_setChainRateLimiterConfigs:test_MismatchedArrayLengths_Revert() (gas: 23786)
+TokenPool_setChainRateLimiterConfigs:test_NonExistentChain_Revert() (gas: 19337)
 TokenPool_setChainRateLimiterConfigs:test_OnlyOwnerOrRateLimitAdmin_Revert() (gas: 16424)
 TokenPool_setRateLimitAdmin:test_SetRateLimitAdmin_Revert() (gas: 11024)
 TokenPool_setRateLimitAdmin:test_SetRateLimitAdmin_Success() (gas: 37672)

contracts/src/v0.8/ccip/test/pools/TokenPool/TokenPool.setChainRateLimiterConfigs.t.sol

@@ -102,39 +102,27 @@ contract TokenPool_setChainRateLimiterConfigs is TokenPoolSetup {
     chainSelectors[0] = wrongChainSelector;
 
     RateLimiter.Config[] memory newOutboundConfigs = new RateLimiter.Config[](1);
-    newOutboundConfigs[0] = _getOutboundRateLimiterConfig();
-
     RateLimiter.Config[] memory newInboundConfigs = new RateLimiter.Config[](1);
-    newInboundConfigs[0] = _getInboundRateLimiterConfig();
 
     vm.expectRevert(abi.encodeWithSelector(TokenPool.NonExistentChain.selector, wrongChainSelector));
     s_tokenPool.setChainRateLimiterConfigs(chainSelectors, newOutboundConfigs, newInboundConfigs);
   }
 
   function test_MismatchedArrayLengths_Revert() public {
     uint64[] memory chainSelectors = new uint64[](1);
-    chainSelectors[0] = DEST_CHAIN_SELECTOR;
 
     RateLimiter.Config[] memory newOutboundConfigs = new RateLimiter.Config[](1);
-    newOutboundConfigs[0] = _getOutboundRateLimiterConfig();
-
     RateLimiter.Config[] memory newInboundConfigs = new RateLimiter.Config[](2);
-    newInboundConfigs[0] = _getInboundRateLimiterConfig();
-    newInboundConfigs[1] = _getInboundRateLimiterConfig();
 
     // test mismatched array lengths between rate limiters
     vm.expectRevert(abi.encodeWithSelector(TokenPool.MismatchedArrayLengths.selector));
     s_tokenPool.setChainRateLimiterConfigs(chainSelectors, newOutboundConfigs, newInboundConfigs);
 
     newInboundConfigs = new RateLimiter.Config[](1);
-    newInboundConfigs[0] = _getInboundRateLimiterConfig();
-
-    uint64[] memory chainSelectors2 = new uint64[](2);
-    chainSelectors2[0] = DEST_CHAIN_SELECTOR;
-    chainSelectors2[1] = DEST_CHAIN_SELECTOR;
+    chainSelectors = new uint64[](2);
 
     // test mismatched array lengths between chain selectors and rate limiters
     vm.expectRevert(abi.encodeWithSelector(TokenPool.MismatchedArrayLengths.selector));
-    s_tokenPool.setChainRateLimiterConfigs(chainSelectors2, newOutboundConfigs, newInboundConfigs);
+    s_tokenPool.setChainRateLimiterConfigs(chainSelectors, newOutboundConfigs, newInboundConfigs);
   }
 }