Remove devDependency tslib (#196)

Author: trivikr

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/TypeScriptDependency.java

@@ -28,7 +28,6 @@
  */
 public enum TypeScriptDependency implements SymbolDependencyContainer {
 
-    TS_LIB("devDependencies", "tslib", "^1.8.0", true),
     AWS_SDK_CLIENT_DOCGEN("devDependencies", "@aws-sdk/client-documentation-generator", "1.0.0-gamma.3", true),
     AWS_SDK_TYPES("dependencies", "@aws-sdk/types", "^1.0.0-beta.0", true),
     AWS_SMITHY_CLIENT("dependencies", "@aws-sdk/smithy-client", "^1.0.0-beta.0", true),

smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/TypeScriptDependencyTest.java

@@ -20,8 +20,6 @@ public void createsSymbols() {
 
     @Test
     public void getsUnconditionalDependencies() {
-        assertThat(TypeScriptDependency.getUnconditionalDependencies(),
-                   hasItem(TypeScriptDependency.TS_LIB.dependency));
         assertThat(TypeScriptDependency.getUnconditionalDependencies(),
                    hasItem(TypeScriptDependency.AWS_SDK_CLIENT_DOCGEN.dependency));
     }