Android: Remove #ifdef __cplusplus checks

A C compiler would very much be unable to build this code anyway.

Source/Android/jni/IniFile.cpp

@@ -60,9 +60,7 @@ static void Set(JNIEnv* env, jobject obj, jstring section_name, jstring key, T n
       ->Set(GetJString(env, key), new_value);
 }
 
-#ifdef __cplusplus
 extern "C" {
-#endif
 
 JNIEXPORT jboolean JNICALL Java_org_dolphinemu_dolphinemu_utils_IniFile_00024Section_exists(
     JNIEnv* env, jobject obj, jstring key)
@@ -243,7 +241,4 @@ JNIEXPORT jlong JNICALL Java_org_dolphinemu_dolphinemu_utils_IniFile_copyIniFile
 {
   return reinterpret_cast<jlong>(new IniFile(*GetIniFilePointer(env, other)));
 }
-
-#ifdef __cplusplus
 }
-#endif