resource/aws_lambda_function: Remove deprecated (helper/schema.ResourceData).Partial() and (helper/schema.ResourceData).SetPartial() (#12466)
resource/aws_lambda_function: Remove deprecated (helper/schema.ResourceData).Partial() and (helper/schema.ResourceData).SetPartial() (#12466)

Reference: https://github.com/terraform-providers/terraform-provider-aws/issues/12083
Reference: https://github.com/terraform-providers/terraform-provider-aws/issues/12087

Previously:

```
aws/resource_aws_lambda_function.go:674:2: R007: deprecated (schema.ResourceData).Partial
aws/resource_aws_lambda_function.go:841:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:842:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:843:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:844:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:845:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:884:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:885:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:886:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:887:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:888:3: R008: deprecated (schema.ResourceData).SetPartial
aws/resource_aws_lambda_function.go:931:2: R007: deprecated (schema.ResourceData).Partial
```

Output from acceptance testing:

```
--- PASS: TestAccAWSLambdaFunction_basic (64.06s)
--- PASS: TestAccAWSLambdaFunction_concurrency (493.45s)
--- PASS: TestAccAWSLambdaFunction_concurrencyCycle (529.28s)
--- PASS: TestAccAWSLambdaFunction_DeadLetterConfig (536.23s)
--- PASS: TestAccAWSLambdaFunction_DeadLetterConfigUpdated (148.43s)
--- PASS: TestAccAWSLambdaFunction_disappears (94.71s)
--- PASS: TestAccAWSLambdaFunction_EmptyVpcConfig (68.70s)
--- PASS: TestAccAWSLambdaFunction_encryptedEnvVariables (561.28s)
--- PASS: TestAccAWSLambdaFunction_envVariables (579.67s)
--- PASS: TestAccAWSLambdaFunction_expectFilenameAndS3Attributes (24.88s)
--- PASS: TestAccAWSLambdaFunction_KmsKeyArn_NoEnvironmentVariables (151.22s)
--- PASS: TestAccAWSLambdaFunction_Layers (514.42s)
--- PASS: TestAccAWSLambdaFunction_LayersUpdate (170.54s)
--- PASS: TestAccAWSLambdaFunction_localUpdate (523.11s)
--- PASS: TestAccAWSLambdaFunction_localUpdate_nameOnly (486.27s)
--- PASS: TestAccAWSLambdaFunction_nilDeadLetterConfig (492.13s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_java11 (83.49s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_java8 (78.16s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_NodeJs10x (514.99s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_NodeJs12x (513.46s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_noRuntime (2.32s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_provided (71.48s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_python27 (56.73s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_python36 (97.54s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_python37 (50.94s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_python38 (89.93s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_ruby25 (109.39s)
--- PASS: TestAccAWSLambdaFunction_runtimeValidation_ruby27 (117.27s)
--- PASS: TestAccAWSLambdaFunction_s3 (44.11s)
--- PASS: TestAccAWSLambdaFunction_s3Update_basic (74.22s)
--- PASS: TestAccAWSLambdaFunction_s3Update_unversioned (68.76s)
--- PASS: TestAccAWSLambdaFunction_tags (140.89s)
--- PASS: TestAccAWSLambdaFunction_tracingConfig (535.70s)
--- PASS: TestAccAWSLambdaFunction_updateRuntime (511.04s)
--- PASS: TestAccAWSLambdaFunction_versioned (514.26s)
--- PASS: TestAccAWSLambdaFunction_versionedUpdate (607.45s)
--- PASS: TestAccAWSLambdaFunction_VPC (2148.53s)
--- PASS: TestAccAWSLambdaFunction_VPC_withInvocation (1848.27s)
--- PASS: TestAccAWSLambdaFunction_VpcConfig_ProperIamDependencies (1568.41s)
--- PASS: TestAccAWSLambdaFunction_VPCRemoval (2046.17s)
--- PASS: TestAccAWSLambdaFunction_VPCUpdate (2526.06s)
```
kjmkznr/terraform-provider-aws,kjmkznr/terraform-provider-aws,terraform-providers/terraform-provider-aws,terraform-providers/terraform-provider-aws,kjmkznr/terraform-provider-aws,terraform-providers/terraform-provider-aws,terraform-providers/terraform-provider-aws,kjmkznr/terraform-provider-aws