refactor: remove runtime unsound codes

[Peefy]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

Closes #196

2. What is the scope of this PR (e.g. component or file name):

• kclvm/runtime/src/**

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

[coveralls]

Pull Request Test Coverage Report for Build 7691749816

• -35 of 56 (37.5%) changed or added relevant lines in 18 files are covered.
• 241 unchanged lines in 8 files lost coverage.
• Overall coverage decreased (-15.5%) to 72.311%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
kclvm/runtime/src/api/error.rs	0	1	0.0%
kclvm/runtime/src/api/kclvm.rs	1	2	50.0%
kclvm/runtime/src/context/mod.rs	1	2	50.0%
kclvm/runtime/src/manifests/mod.rs	0	1	0.0%
kclvm/runtime/src/stdlib/assert_api.rs	0	1	0.0%
kclvm/runtime/src/stdlib/plugin.rs	0	1	0.0%
kclvm/runtime/src/value/val_decorator.rs	3	4	75.0%
kclvm/runtime/src/value/walker.rs	1	2	50.0%
kclvm/runtime/src/base64/mod.rs	0	2	0.0%
kclvm/runtime/src/value/val_dict.rs	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
compiler_base/error/src/diagnostic/diagnostic_message.rs	3	0.0%
compiler_base/error/src/diagnostic/components.rs	6	0.0%
compiler_base/error/src/errors.rs	8	0.0%
compiler_base/error/src/diagnostic/diagnostic_handler.rs	11	0.0%
compiler_base/session/src/lib.rs	26	58.06%
compiler_base/error/src/diagnostic/mod.rs	27	0.0%
compiler_base/error/src/diagnostic/style.rs	41	0.0%
compiler_base/error/src/emitter.rs	119	0.0%

Totals
Change from base Build 7669393536:	-15.5%
Covered Lines:	43736
Relevant Lines:	60483

---

💛 - Coveralls

[zong-zhe]

LGTM