Remove capacity from JsonDocument's constructor

extras/tests/FailingBuilds/Issue978.cpp

@@ -8,6 +8,6 @@ struct Stream {};
 
 int main() {
   Stream* stream = 0;
-  JsonDocument doc(1024);
+  JsonDocument doc;
   deserializeJson(doc, stream);
 }

extras/tests/FailingBuilds/assign_char.cpp

@@ -7,6 +7,6 @@
 // See issue #1498
 
 int main() {
-  JsonDocument doc(1024);
+  JsonDocument doc;
   doc["dummy"] = 'A';
 }

extras/tests/FailingBuilds/read_long_long.cpp

@@ -11,6 +11,6 @@
 
 ARDUINOJSON_ASSERT_INTEGER_TYPE_IS_SUPPORTED(long long)
 int main() {
-  JsonDocument doc(1024);
+  JsonDocument doc;
   doc["dummy"].as<long long>();
 }

extras/tests/FailingBuilds/variant_as_char.cpp

@@ -7,6 +7,6 @@
 // See issue #1498
 
 int main() {
-  JsonDocument doc(1024);
+  JsonDocument doc;
   doc["dummy"].as<char>();
 }

extras/tests/FailingBuilds/write_long_long.cpp

@@ -10,6 +10,6 @@
 #endif
 
 int main() {
-  JsonDocument doc(1024);
+  JsonDocument doc;
   doc["dummy"] = static_cast<long long>(42);
 }