Do not warn about non-translated strings in the iplog generator

This module is used by very few people so translation is not a priority
and hence we need no warnings about untranslated strings.

Change-Id: I11be2e9903583d1a3dade7bf3d5eb77a30152b7c

org.eclipse.jgit.iplog/.settings/org.eclipse.jdt.core.prefs

@@ -60,7 +60,7 @@ org.eclipse.jdt.core.compiler.problem.missingSerialVersion=warning
 org.eclipse.jdt.core.compiler.problem.missingSynchronizedOnInheritedMethod=ignore
 org.eclipse.jdt.core.compiler.problem.noEffectAssignment=error
 org.eclipse.jdt.core.compiler.problem.noImplicitStringConversion=error
-org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral=warning
+org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral=ignore
 org.eclipse.jdt.core.compiler.problem.nullAnnotationInferenceConflict=error
 org.eclipse.jdt.core.compiler.problem.nullReference=error
 org.eclipse.jdt.core.compiler.problem.nullSpecViolation=error