graphcycles: drop Vec<>; use std::vector instead
graphcycles: drop Vec<>; use std::vector instead

name                          old time/op  new time/op  delta
BM_StressTest/2048             487ns ± 1%   482ns ± 3%     ~     (p=0.310 n=5+5)
BM_StressTest/4096             498ns ± 2%   491ns ± 0%     ~     (p=0.111 n=5+4)
BM_StressTest/32768            523ns ± 1%   512ns ± 2%     ~     (p=0.056 n=5+5)
BM_StressTest/262144           613ns ± 5%   588ns ±11%     ~     (p=0.548 n=5+5)
BM_StressTest/1048576          758ns ± 3%   775ns ±26%     ~     (p=1.000 n=5+5)
BM_ContractEdge/1000           127ns ± 3%   121ns ± 5%     ~     (p=0.056 n=5+5)
BM_ContractEdge/10000          149ns ± 2%   146ns ± 1%   -1.47%  (p=0.032 n=5+5)
BM_IsReachableNonConst/10     12.1ns ± 9%  10.1ns ±11%  -16.69%  (p=0.016 n=5+5)
BM_IsReachableNonConst/50     20.6ns ±17%  14.7ns ±13%  -29.00%  (p=0.008 n=5+5)
BM_IsReachableNonConst/100    25.4ns ±20%  18.3ns ±13%  -27.98%  (p=0.008 n=5+5)
BM_IsReachableNonConst/200    30.6ns ±27%  20.1ns ± 6%  -34.35%  (p=0.008 n=5+5)
BM_IsReachableNonConst/1000   40.1ns ±27%  25.8ns ± 5%  -35.71%  (p=0.008 n=5+5)
BM_IsReachableNonConst/30000  67.1ns ± 2%  49.2ns ± 4%  -26.77%  (p=0.016 n=4+5)

FUTURE_COPYBARA_INTEGRATE_REVIEW=https://github.com/openxla/xla/pull/10519 from openxla:cudnn_frontend_1_2_0 4695023e035516db05b707d79409a60eba9f47f7
