Java: Rename FloatingPointLiteral to FloatLiteral

"Floating point" refers to both `double` and `float`, and is also used by
the JLS in this way. Therefore the old CodeQL class name for `float` literals
was misleading.

java/ql/test/kotlin/library-tests/literals/literals.expected

@@ -15,9 +15,9 @@
 | literals.kt:17:30:17:33 | 15 | LongLiteral |
 | literals.kt:18:30:18:39 | 11 | LongLiteral |
 | literals.kt:19:30:19:38 | 1234567 | LongLiteral |
-| literals.kt:20:32:20:35 | 0.0 | FloatingPointLiteral |
-| literals.kt:21:32:21:37 | 123.4 | FloatingPointLiteral |
-| literals.kt:22:32:22:38 | -123.4 | FloatingPointLiteral |
+| literals.kt:20:32:20:35 | 0.0 | FloatLiteral |
+| literals.kt:21:32:21:37 | 123.4 | FloatLiteral |
+| literals.kt:22:32:22:38 | -123.4 | FloatLiteral |
 | literals.kt:23:34:23:36 | 0.0 | DoubleLiteral |
 | literals.kt:24:34:24:38 | 123.4 | DoubleLiteral |
 | literals.kt:25:34:25:39 | -123.4 | DoubleLiteral |

java/ql/test/library-tests/fields/PrintAst.expected

@@ -3,7 +3,7 @@ fields/FieldTest.java:
 #    3|   1: [Class] FieldTest
 #    4|     4: [FieldDeclaration] float ff, ...;
 #    4|       -1: [TypeAccess] float
-#    4|       1: [FloatingPointLiteral] 2.3f
+#    4|       1: [FloatLiteral] 2.3f
 #    5|     5: [FieldDeclaration] Object obj, ...;
 #    5|       -1: [TypeAccess] Object
 #    5|       0: [NullLiteral] null

java/ql/test/library-tests/literals/floatLiterals/floatLiterals.ql

@@ -1,4 +1,4 @@
 import semmle.code.java.Expr
 
-from FloatingPointLiteral lit
+from FloatLiteral lit
 select lit, lit.getValue(), lit.getFloatValue()

java/ql/test/library-tests/literals/literals-numeric/negativeNumericLiterals.ql

@@ -4,6 +4,6 @@ from Literal l
 where
   l instanceof IntegerLiteral or
   l instanceof LongLiteral or
-  l instanceof FloatingPointLiteral or
+  l instanceof FloatLiteral or
   l instanceof DoubleLiteral
 select l, l.getValue(), l.getParent()