Remove cc_internal.create_common() - it isn't used anymore.

PiperOrigin-RevId: 753155456
Change-Id: Ia6f9f95a4d7d6009ce946382bf70a7e8d0480b17

Author: pzembrod

src/main/java/com/google/devtools/build/lib/rules/cpp/CcStarlarkInternal.java

@@ -269,16 +269,6 @@ public String getPackageHeadersCheckingModeForStarlarkAspect(
         .getDefaultHdrsCheck();
   }
 
-  @StarlarkMethod(
-      name = "create_common",
-      documented = false,
-      parameters = {
-        @Param(name = "ctx", positional = false, named = true),
-      })
-  public CcCommon createCommon(StarlarkRuleContext starlarkRuleContext) {
-    return new CcCommon(starlarkRuleContext.getRuleContext());
-  }
-
   @StarlarkMethod(name = "launcher_provider", documented = false, structField = true)
   public ProviderApi getCcLauncherInfoProvider() throws EvalException {
     return CcLauncherInfo.PROVIDER;