Remove erroneously added strings

Signed-off-by: junya koyama <[email protected]>

Author: arukiidou

documentation/src/docs/asciidoc/user-guide/writing-tests.adoc

@@ -2241,8 +2241,7 @@ If the programming language you are using supports _text blocks_ you can alterna
 the `textBlock` attribute of `@CsvSource`. Each record within a text block represents a
 CSV record and results in one invocation of the parameterized class or test. The first record
 may optionally be used to supply CSV headers by setting the `useHeadersInDisplayName` attribute
-to `true` as in the example below. or one of its superclasses, field injection will be used.
-Otherwise, constructor injection
+to `true` as in the example below.
 
 Using a text block, the previous example can be implemented as follows.