tests: remove final newlines from tests that are not supposed to have them, according to comments

Author: gribozavr

test/IDE/complete_at_eof_in_call_no_newline_1.swift

@@ -7,4 +7,4 @@
 // A-DAG: Pattern/ExprSpecific:               ['(']{#(x): Int#})[#Void#]{{; name=.+$}}
 // A: End completions
 func f(_ x: Int) {}
-f(#^A^#
+f(#^A^#

test/IDE/complete_at_eof_no_newline_1.swift

@@ -13,4 +13,4 @@ struct FooStruct {
 }
 var fooObject: FooStruct
 // There is no newline on the following line.  Don't fix this!
-fooObject.#^A^#
+fooObject.#^A^#

test/IDE/complete_at_eof_no_newline_2.swift

@@ -10,4 +10,4 @@
 // A: End completions
 func f() {}
 // There is no newline on the following line.  Don't fix this!
-#^A^#
+#^A^#

test/Parse/EOF/block-comment-missing-newline.swift

@@ -1,4 +1,4 @@
 // RUN: %target-parse-verify-swift
 
 // This file does not end in a trailing newline; this is deliberate!
-/* unterminated block comment expected-note{{comment started here}} expected-error{{unterminated '/*' comment}}{{126-126=*/}}
+/* unterminated block comment expected-note{{comment started here}} expected-error{{unterminated '/*' comment}}{{126-126=*/}}

test/Parse/EOF/unterminated-string-literal-missing-newline.swift

@@ -4,4 +4,4 @@
 
 // This file does not end in a trailing newline; this is deliberate, don't fix it!
 
-/* expected-error {{unterminated string literal}} */ "
+/* expected-error {{unterminated string literal}} */ "