dataflow_cpp: fixed cpplint warnings

dataflow_cpp/include/embb/dataflow/internal/inputs.h

@@ -70,7 +70,7 @@ class Inputs<T1, embb::base::internal::Nil, embb::base::internal::Nil,
     embb::base::internal::Nil>
     embb::base::internal::Nil>
   , public ClockListener {
   , public ClockListener {
  public:
  public:
-  explicit Inputs() : count_(NULL), slices_(0) {
+  Inputs() : count_(NULL), slices_(0) {
     // empty
     // empty
   }
   }
   void SetSlices(int slices) {
   void SetSlices(int slices) {
@@ -136,7 +136,7 @@ class Inputs<T1, T2, embb::base::internal::Nil,
     embb::base::internal::Nil, embb::base::internal::Nil>
     embb::base::internal::Nil, embb::base::internal::Nil>
   , public ClockListener {
   , public ClockListener {
  public:
  public:
-  explicit Inputs() : count_(NULL), slices_(0) {
+  Inputs() : count_(NULL), slices_(0) {
     // empty
     // empty
   }
   }
   void SetSlices(int slices) {
   void SetSlices(int slices) {
@@ -208,7 +208,7 @@ class Inputs<T1, T2, T3, embb::base::internal::Nil,
     embb::base::internal::Nil, embb::base::internal::Nil>
     embb::base::internal::Nil, embb::base::internal::Nil>
   , public ClockListener {
   , public ClockListener {
  public:
  public:
-  explicit Inputs() : count_(NULL), slices_(0) {
+  Inputs() : count_(NULL), slices_(0) {
     // empty
     // empty
   }
   }
   void SetSlices(int slices) {
   void SetSlices(int slices) {
@@ -285,7 +285,7 @@ class Inputs<T1, T2, T3, T4, embb::base::internal::Nil>
       In<T4>, embb::base::internal::Nil>
       In<T4>, embb::base::internal::Nil>
   , public ClockListener {
   , public ClockListener {
  public:
  public:
-  explicit Inputs() : count_(NULL), slices_(0) {
+  Inputs() : count_(NULL), slices_(0) {
     // empty
     // empty
   }
   }
   void SetSlices(int slices) {
   void SetSlices(int slices) {
@@ -369,7 +369,7 @@ class Inputs
       In<T4>, In<T5> >
       In<T4>, In<T5> >
   , public ClockListener {
   , public ClockListener {
  public:
  public:
-  explicit Inputs() : count_(NULL), slices_(0) {
+  Inputs() : count_(NULL), slices_(0) {
     // empty
     // empty
   }
   }
   void SetSlices(int slices) {
   void SetSlices(int slices) {