fix: cannot find ajv module when ibm:oas ruleset extended (#279)

Purpose:
- Exception thrown when user creates spectral config that extends ibm:oas. Removes a rule that we want to reintroduce but allows users to extend the ibm:oas ruleset for now.

Changes:
- Remove the rule that causes this problem.

docs/spectral-rules.md

@@ -56,12 +56,6 @@ responses:
 
 **Default Severity**: warn
 
-## ibm-sdk-operations
-
-Validates the structure of the `x-sdk-operations` object using [this JSON Schema document](/src/spectral/schemas/x-sdk-operations.json).
-
-**Default Severity**: warn
-
 ## response-error-response-schema
 
 `4xx` and `5xx` error responses should provide good information to help the user resolve the error. The error response validations are based on the design principles outlined in the [errors section of the IBM API Handbook](https://cloud.ibm.com/docs/api-handbook?topic=api-handbook-errors). The `response-error-response-schema` rule is more lenient than what is outlined in the handbook. Specifically, the `response-error-response-schema` rule does not require an Error Container Model and allows for a single Error Model to be provided at the top level of the error response schema or in an `error` field.

src/spectral/rulesets/.defaultsForSpectral.yaml

@@ -2,7 +2,6 @@ extends: spectral:oas
 functionsDir: './ibm-oas'
 functions:
   - error-response-schema
-  - json-schema-validation
   - response-example-provided
 rules:
 
@@ -121,17 +120,6 @@ rules:
     then:
       field: schema
       function: truthy
-  # custom Spectral rule to ensure valid x-sdk-operations schema
-  ibm-sdk-operations:
-    message: "{{error}}"
-    given: $.
-    severity: warn
-    formats: ["oas3"]
-    resolved: true
-    then:
-      function: json-schema-validation
-      functionOptions:
-        schemaKey: 'ibm/schemas/x-sdk-operations'
   # custom Spectral rule to ensure response example provided
   response-example-provided:
     message: "{{error}}"

src/spectral/utils/spectral-validator.js

@@ -103,17 +103,6 @@ function setupStaticAssets(staticAssets, defaultSpectralRulesetURI) {
 
   const parentDirectory = path.parse(defaultSpectralRulesetURI).dir;
 
-  // register schemas
-  const baseKey = 'ibm/schemas';
-  const schemaDirURI = path.join(parentDirectory, 'schemas');
-  fs.readdirSync(schemaDirURI).forEach(function(jsonSchemaFile) {
-    const schemaKey = path.join(baseKey, path.parse(jsonSchemaFile).name);
-    staticAssets[schemaKey] = fs.readFileSync(
-      path.join(schemaDirURI, jsonSchemaFile),
-      'utf8'
-    );
-  });
-
   // register custom functions
   const customFunctionsDirURI = path.join(parentDirectory, 'ibm-oas');
   fs.readdirSync(customFunctionsDirURI).forEach(function(customFunctionFile) {