Remove on NTP widgets is not translated

[btlechowski]

Steps to Reproduce

1. Change locale to Polish
2. Open New Tab
3. Edit a NTP widget

Actual result:

Remove is not translated

Expected result:

Remove is translated

Reproduces how often:

Always

Brave version (brave://version info)

Reproducible on

Brave	0.71.114 Chromium: 78.0.3904.97 (Official Build) (64-bit)
Revision	021b9028c246d820be17a10e5b393ee90f41375e-refs/branch-heads/3904@{#859}
OS	Ubuntu 18.04 LTS

Brave	0.71.112 Chromium: 78.0.3904.87 (Oficjalna wersja) beta (64-bitowa)
Wersja	20c21f4010010f32462ea8e1d6af30cef66d48c8-refs/branch-heads/3904@{#840}
System operacyjny	Windows 7 Service Pack 1 (Build 7601.24530)

Brave	0.74.7 Chromium: 78.0.3904.87 (Oficjalna wersja) nightly (64-bitowa)
Wersja	20c21f4010010f32462ea8e1d6af30cef66d48c8-refs/branch-heads/3904@{#840}
System operacyjny	Windows 7 Service Pack 1 (Build 7601.24530)

Version/Channel Information:

• Can you reproduce this issue with the current release? yes
• Can you reproduce this issue with the beta channel? yes
• Can you reproduce this issue with the dev channel? yes
• Can you reproduce this issue with the nightly channel? yes

cc @brave/legacy_qa @rebron @mkarolin @ryanml

[LaurenWags]

Reproduced for the languages I retested which were: Polish, French, German, Japanese

Brave	1.1.20 Chromium: 79.0.3945.74 (Official Build) (64-bit)
Revision	99b6d241cf84f7fa7434ae8a59f9e74eb1464280-refs/branch-heads/3945@{#888}
OS	macOS バージョン10.13.6（ビルド17G5019）

[LaurenWags]

Verified passed with

Brave	1.5.102 Chromium: 80.0.3987.122 (Official Build) beta (64-bit)
Revision	cf72c4c4f7db75bc3da689cd76513962d31c7b52-refs/branch-heads/3987@{#943}
OS	macOS Version 10.14.6 (Build 18G3020)

• Verified STR from description for the following languages:

Polish

French

German

Japanese

Verification passed on

Brave	1.5.102 Chromium: 80.0.3987.122 (Official Build) beta (64-bit)
Revision	cf72c4c4f7db75bc3da689cd76513962d31c7b52-refs/branch-heads/3987@{#943}
OS	Windows 10 OS Version 1803 (Build 17134.1006)

• Verified STR from the description

Polish

French

German

Verification passed on

Brave	1.5.101 Chromium: 80.0.3987.116 (Official Build) beta (64-bit)
Revision	dc00a510e4c2ae25c4d084cc3d946fc782249224-refs/branch-heads/3987@{#917}
OS	Ubuntu 18.04 LTS

Verified test plan from the description

Polish

German