Remove importing data tag

It got replace by `custom data` in the case that it wasn't there.

Author: gaviles

Algorithm.CSharp/BasicTemplateFxcmVolumeAlgorithm.cs

@@ -24,7 +24,6 @@ namespace QuantConnect.Algorithm.CSharp
     ///  Example demonstrating importing custom forex volume data to use with your algorithm from FXCM.
     /// </summary>
     /// <meta name="tag" content="using data" />
-    /// <meta name="tag" content="importing data" />
     /// <meta name="tag" content="custom data" />
     /// <meta name="tag" content="history" />
     /// <meta name="tag" content="forex" />

Algorithm.CSharp/BubbleAlgorithm.cs

@@ -32,7 +32,6 @@ namespace QuantConnect.Algorithm.CSharp
     /// </summary>
     /// <meta name="tag" content="strategy example" />
     /// <meta name="tag" content="custom data" />
-    /// <meta name="tag" content="importing data" />
     public class BubbleAlgorithm : QCAlgorithm
     {
         private decimal _currCape;

Algorithm.CSharp/CustomDataBitcoinAlgorithm.cs

@@ -23,7 +23,6 @@ namespace QuantConnect.Algorithm.CSharp
     /// </summary>
     /// <meta name="tag" content="using data" />
     /// <meta name="tag" content="custom data" />
-    /// <meta name="tag" content="importing data" />
     /// <meta name="tag" content="crypto" />
     public class CustomDataBitcoinAlgorithm : QCAlgorithm
     {

Algorithm.CSharp/CustomDataNIFTYAlgorithm.cs

@@ -27,7 +27,6 @@ namespace QuantConnect.Algorithm.CSharp
     /// </summary>
     /// <meta name="tag" content="strategy example" />
     /// <meta name="tag" content="using data" />
-    /// <meta name="tag" content="importing data" />
     /// <meta name="tag" content="custom data" />
     public class CustomDataNiftyAlgorithm : QCAlgorithm
     {

Algorithm.CSharp/CustomDataRegressionAlgorithm.cs

@@ -21,7 +21,6 @@ namespace QuantConnect.Algorithm.CSharp
     /// Regression test to demonstrate importing and trading on custom data.
     /// </summary>
     /// <meta name="tag" content="using data" />
-    /// <meta name="tag" content="importing data" />
     /// <meta name="tag" content="custom data" />
     /// <meta name="tag" content="crypto" />
     /// <meta name="tag" content="regression test" />

Algorithm.CSharp/DailyFxAlgorithm.cs

@@ -24,7 +24,6 @@ namespace QuantConnect.Algorithm.CSharp
     /// Use event/fundamental calendar information (DailyFx) to design event based forex algorithms.
     /// </summary>
     /// <meta name="tag" content="using data" />
-    /// <meta name="tag" content="importing data" />
     /// <meta name="tag" content="custom data" />
     /// <meta name="tag" content="forex" />
     /// <meta name="tag" content="dailyfx" />

Algorithm.CSharp/QuandlFuturesDataAlgorithm.cs

@@ -26,7 +26,6 @@ namespace QuantConnect.Algorithm.CSharp
     /// </summary>
     /// <meta name="tag" content="using data" />
     /// <meta name="tag" content="quandl" />
-    /// <meta name="tag" content="importing data" />
     /// <meta name="tag" content="custom data" />
     /// <meta name="tag" content="futures" />
     public class QCUQuandlFutures : QCAlgorithm

Algorithm.CSharp/QuandlImporterAlgorithm.cs

@@ -25,7 +25,7 @@ namespace QuantConnect.Algorithm.CSharp
     /// The Quandl object has properties which match the spreadsheet headers.
     /// If you have multiple quandl streams look at data.Symbol to distinguish them.
     /// </summary>
-    /// <meta name="tag" content="importing data" />
+    /// <meta name="tag" content="custom data" />
     /// <meta name="tag" content="using data" />
     /// <meta name="tag" content="quandl" />
     public class QuandlImporterAlgorithm : QCAlgorithm

Algorithm.Python/CustomDataBitcoinAlgorithm.py

@@ -33,7 +33,6 @@
 ### </summary>
 ### <meta name="tag" content="using data" />
 ### <meta name="tag" content="custom data" />
-### <meta name="tag" content="importing data" />
 ### <meta name="tag" content="crypto" />
 class CustomDataBitcoinAlgorithm(QCAlgorithm):
 

Algorithm.Python/CustomDataNIFTYAlgorithm.py

@@ -33,7 +33,6 @@
 ### </summary>
 ### <meta name="tag" content="strategy example" />
 ### <meta name="tag" content="using data" />
-### <meta name="tag" content="importing data" />
 ### <meta name="tag" content="custom data" />
 class CustomDataNIFTYAlgorithm(QCAlgorithm):