(Multiple languages) Simplify taint tracking example

docs/codeql/codeql-language-guides/analyzing-data-flow-in-csharp.rst

@@ -65,8 +65,7 @@ Local taint tracking extends local data flow by including non-value-preserving f
 
 .. code-block:: csharp
 
-     var temp = x;
-     var y = temp + ", " + temp;
+     var y = "Hello " + x;
 
 If ``x`` is a tainted string then ``y`` is also tainted.
 

docs/codeql/codeql-language-guides/analyzing-data-flow-in-go.rst

@@ -76,8 +76,7 @@ Local taint tracking extends local data flow by including non-value-preserving f
 
 .. code-block:: go
 
-     temp := x;
-     y := temp + ", " + temp;
+     y := "Hello " + x;
 
 If ``x`` is a tainted string then ``y`` is also tainted.
 

docs/codeql/codeql-language-guides/analyzing-data-flow-in-java.rst

@@ -74,8 +74,7 @@ Local taint tracking extends local data flow by including non-value-preserving f
 
 .. code-block:: java
 
-     String temp = x;
-     String y = temp + ", " + temp;
+     String y = "Hello " + x;
 
 If ``x`` is a tainted string then ``y`` is also tainted.
 

docs/codeql/codeql-language-guides/analyzing-data-flow-in-python.rst

@@ -62,8 +62,7 @@ Local taint tracking extends local data flow by including non-value-preserving f
 
 .. code-block:: python
 
-     temp = x
-     y = temp + ", " + temp
+     y = "Hello " + x
 
 If ``x`` is a tainted string then ``y`` is also tainted.
 

docs/codeql/codeql-language-guides/analyzing-data-flow-in-ruby.rst

@@ -74,8 +74,7 @@ For example:
 
 .. code-block:: ruby
 
-     temp = x
-     y = temp + ", " + temp
+     y = "Hello " + x
 
 If ``x`` is a tainted string then ``y`` is also tainted.
 

docs/codeql/codeql-language-guides/analyzing-data-flow-in-swift.rst

@@ -72,8 +72,7 @@ For example:
 
 .. code-block:: swift
 
-     temp = x
-     y = temp + ", " + temp
+     y = "Hello " + x
 
 If ``x`` is a tainted string then ``y`` is also tainted.