Delete code-security-guarantee, code-compliance-guarantee, content model doc in the productivity dimension

Signed-off-by: lishengbao <[email protected]>

Author: lishengbao

metrics-models/README.md

@@ -11,9 +11,6 @@ Metrics Model Names | Descriptions
 --- | --- 
 [Collaboration Development Index](./productivity/collaboration-development-index.md#collaboration-development-index) | Use proxy metrics to evaluate how well the development process is managed and how well the community is doing with collaborative development.
 [Community Service and Support](./productivity/community-service-and-support.md#community-service-and-support) | It measures the quality of services and support provided by the community as directly perceived by a developer during the contribution process.
-[Code Security Guarantee](./productivity/code/code-security-guarantee.md#code-security-guarantee) | Coming soon!
-[Code Compliance Guarantee](./productivity/code/code-compliance-guarantee.md#code-compliance-guarantee) | Coming soon!
-[Content](./productivity/content.md#content) | Coming soon!
 
 ## [**Robustness**](./robustness/README.md)
 Definition: The capability of an ecosystem or project to face and survive disruptions.

metrics-models/productivity/README.md

@@ -25,18 +25,6 @@ Metrics Name | Definition | Threshold | Weight
 [Code Merge Ratio](./collaboration-development-index.md#code-merge-ratio) |Determine the percentage of PR Mergers and PR authors who are not the same person in the last 90 days of commits.|100%| 10.113%
 [Lines of Code Frequency](./collaboration-development-index.md#lines-of-code-frequency) |Determine the average number of lines touched (lines added plus lines removed) per week in the past 90 days. |300000| 5.640%
 
-## [Code Security Guarantee](./code/code-security-guarantee.md#code-security-guarantee)
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-Coming soon!
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-
-## [Code Compliance Guarantee](./code/code-compliance-guarantee.md#code-compliance-guarantee)
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-Coming soon!
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-## [Content](./content.md#content)
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-Coming soon!
 
 ## [Community Service and Support](./community-service-and-support.md#community-service-and-support)